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').

Potential energy is divided into ____ different types of energy.\Question: Choose the right answer from options given a) eight b) three c) zero d) two
b

Pups get their sight in about ____ days.\Question: Choose the right answer from options given a) five b) six c) ten d) nine
c

Many portable extinguishers discharge completely in as few as ____ to ten seconds.\Question: Choose the right answer from options given a) three b) seven c) nine d) eight

d