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: All loci have ____ or two alleles.\Question: Choose the right answer from options given a) no b) six c) four d) one

SOLUTION: d

PROBLEM: Whales are divided into ____ categories, based on their teeth.\Question: Choose the right answer from options given a) two b) four c) nine d) ten

SOLUTION: a

PROBLEM: Grasshoppers have ____ bulky eyes on top of the head.\Question: Choose the right answer from options given a) six b) one c) four d) two

SOLUTION:
d