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: Elephants rise ____ inches when they inhale.\Question: Choose the right answer from options given a) two b) five c) one d) eight

SOLUTION: a

PROBLEM: Most linguists organize the African languages into ____ major language families.\Question: Choose the right answer from options given a) three b) four c) eight d) no

SOLUTION: b

PROBLEM: Telescopes come in ____ basic types - refractors and reflectors.\Question: Choose the right answer from options given a) five b) ten c) one d) two

SOLUTION:
d