Read the following excerpt from a student essay. How can the writer best improve his or her academic voice?
The Hubble Space Telescope, named for twentieth-century American astronomer Edwin Hubble, is an awesome telescope. NASA began building the telescope in 1977 after Congress gave the go-ahead on the project. In 1990, the space shuttle Discovery crew finally positioned the telescope some 370 miles above Earth. Unfortunately, a defect caused it to produce fuzzy images, but ever since repairs were made by astronauts from the space shuttle Endeavour in 1993, it has taken some pretty great pictures.
A. by avoiding generalizations
B. by using active voice
C. by using consistently formal language
From the given choices, select the correct answer and reply with the letter of the chosen option.

C