TASK DEFINITION: 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').
PROBLEM: Pistillate flowers have a compound ovary with ____ locules topped by three sticky, sessile stigmas.\Question: Choose the right answer from options given a) zero b) three c) six d) seven

SOLUTION: b

PROBLEM: Many comets have ____ tails.\Question: Choose the right answer from options given a) two b) six c) three d) one

SOLUTION: a

PROBLEM: Whales sleep approximately ____ hours per day.\Question: Choose the right answer from options given a) seven b) one c) five d) eight

SOLUTION:
d