Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').
--------
Question: Habitat destruction is a concern for all ____ gorilla subspecies.\Question: Choose the right answer from options given a) no b) four c) three d) five

Answer: b


Question: Nightmares happen frequently in childhood, especially between the ages of ____ and six.\Question: Choose the right answer from options given a) three b) eight c) no d) ten

Answer: a


Question: Heart disease kills more than ____ times as many women as breast and ovarian cancers combined.\Question: Choose the right answer from options given a) five b) seven c) one d) two

Answer:
a