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: Babies show an interest in solid foods when they are approximately four to ____ weeks old.\Question: Choose the right answer from options given a) nine b) eight c) five d) six

SOLUTION: c

PROBLEM: Mountain goats have ____ sharp horns.\Question: Choose the right answer from options given a) two b) six c) ten d) four

SOLUTION: a

PROBLEM: Doctors use ____ blood tests to measure the amount of iron in the body.\Question: Choose the right answer from options given a) three b) zero c) ten d) five

SOLUTION:
a