Question: Sid Avery, was an American photographer and director who was best known for capturing the private moments of legendary Hollywood celebrities like which American actor, film director and political activist, and helped to popularize the Stanislavski system of acting, studying with Stella Adler in the 1940s?
Context: Marlon Brando Jr. (April 3, 1924 – July 1, 2004) was an American actor, film director and political activist.  He is widely credited with bringing realism to film acting.  He helped to popularize the Stanislavski system of acting, studying with Stella Adler in the 1940s.  Brando is widely known for his Academy Award-winning performances as Terry Malloy in "On the Waterfront" (1954) and Vito Corleone in "The Godfather" (1972), as well as his performances in "A Streetcar Named Desire" (1951), "Viva Zapata! " (1952), "Julius Caesar" (1953), "The Wild One" (1953), "Guys and Dolls" (1955), "Sayonara" (1957), "Last Tango in Paris" (1972), and "Apocalypse Now" (1979).  Brando was also an activist for many causes, notably the Civil Rights Movement and various Native American movements. Deborah Kampmeier is an American film director, producer, screenwriter and acting teacher best known for her films "Split," (2016) "Hounddog" (2007) and "Virgin".  (2003).  Deborah began her career in theater as an actress after training at the National Shakespeare Conservatory from 1983–85, and has taught acting in NYC for the past 20 years at such institutions as NYU, Stella Adler Studios, Michael Howard Studios, Playwrights Horizons and The National Shakespeare Conservatory.  She currently teaches a Master Acting Class in New York City. Matt Hoyle is an American photographer based in New York City.  He is most known for publishing "Comic Genius: Portraits of Funny People", a book which features photos of famous celebrities like Steve Martin, Tina Fey, Mel Brooks and Carol Burnett.  His work has been exhibited at the National Portrait Gallery, London. Corey Jantzen is an American film actor and writer.  He is known for his work in the academy award nominated film "Foxcatcher", where he played a wrestler on Team Foxcatcher and helped choreograph the critically acclaimed wrestling sequences.  Jantzen also landed roles in projects like "Dixieland", "The Normal Heart" and worked on the set of the academy award-winning film "American Hustle".  Jantzen started his acting tenure with a conservatory at the Stella Adler Studio of Acting.  During his time at Stella Alder he performed in the productions of "Den of Thieves" and "The History Boys".  Theatre critic Bill Garry applauded his work as Sal [Den of Thieves], stating "Among the mob boys, Corey Michael Jantzen makes Sal, the trigger-happy ‘goomba’ come alive."  Jantzen is a partner of the production company, TC Entertainment, along with his brother Jesse Jantzen. Sid Avery (October 12, 1918 – July 1, 2002) was an American photographer and director who was best known for capturing the private moments of legendary Hollywood celebrities like Elizabeth Taylor, Rock Hudson, James Dean, Marlon Brando, Humphrey Bogart and Audrey Hepburn as showcased in his book, "Hollywood at Home." Method acting is a range of training and rehearsal techniques that seek to encourage sincere and emotionally expressive performances, as formulated by a number of different theatre practitioners, principally in the United States, where it is among the most popular—and controversial—approaches to acting.  These techniques are built on the Stanislavski's "system" of the Russian actor and director Konstantin Stanislavski.  Though many have contributed to the development of the Method, three teachers are associated with "having set the standard of its success", though each emphasized different aspects of the approach: Lee Strasberg (the psychological aspects), Stella Adler (the sociological aspects), and Sanford Meisner (the behavioral aspects).  The approach was first developed when they worked together at the Group Theatre in New York.  All three subsequently claimed to be the rightful heirs of Stanislavski's approach.  His three major books were "An Actor Prepares", "Building a Character", and "Creating a Role". Tom Kelley Sr. (December 12, 1914 – January 8, 1984) was an American photographer who photographed Hollywood celebrities in the 1940s and 1950s.  He is best known for his iconic 1949 nude photographs of Marilyn Monroe, which were distributed widely as calendar art—one of which was featured in the inaugural issue of "Playboy" magazine in 1953. Frank W. Ockenfels III (referred to professionally as Frank Ockenfels 3) is an American photographer, artist, and director who is best known for his portraits of prominent celebrities like David Bowie, Angelina Jolie, Kurt Cobain and numerous others.  He has also done promotional photography for films and television shows like "Breaking Bad", "House of Cards", "Harry Potter" and "Pirates of the Caribbean" among many others. Louie Olivos, Jr., eldest son to Don Lewis Olivos Sr. & Dona Phoebe Gamez Cisneros Olivos, is an actor, promoter, producer, director and playwright from Santa Ana, California.  He studied film at Santa Ana College the University of Southern California and under Stella Adler and is a Screen Actors Guild (SAG) member.  He and his family once owned the Princess, West Coast Theater, and Yost Theater in Historic Downtown Santa Ana and showcased Classical Mexican Cinema there for nearly a half of a century throughout Orange County.  As an entertainment producer and promoter, he brought Antonio Aguilar, Cantinflas, Vicente Fernández, Juan Gabriel, Pedro Infante; as a rock and roll promoter he brought Sonny & Cher, Wolfman Jack and Tina Turner among many other celebrities to Santa Ana.  Through his promotion company called Estrellas de Mexico, he showcased and booked Yolanda Del Rio, Yuri, Pedro Armendáriz & Los Tigres del Norte.  In 1971, he founded "Teatro Los Actores de Santa Ana" and has been active with his troupe around Los Angeles theater houses, including the Ricardo Montalbán Theater and Stella Adler Theater in Hollywood; this troupe is the oldest Latino actor's group in Orange County. Declan Michael Laird (born 1993) is a Scottish actor and a graduate of the Stella Adler Studio of Acting.  He is possibly best known for playing the role of the kid in "The Lost Purse" and as Colin in the American drama "Camp Abercorn".
Answer: Marlon Brando