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: Sea stars have ____ arms, or rays, connected to a small round body.\Question: Choose the right answer from options given a) five b) six c) seven d) no

SOLUTION: a

PROBLEM: Chemical interactions are essentially electron interactions of ____ atoms.\Question: Choose the right answer from options given a) six b) no c) ten d) two

SOLUTION: d

PROBLEM: Ozone affects people in ____ ways.\Question: Choose the right answer from options given a) two b) four c) one d) eight

SOLUTION:
a