instruction:
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').
question:
Nodes are points in space that have ____ probability for locating an electron there.\Question: Choose the right answer from options given a) no b) six c) zero d) three
answer:
c


question:
Alleles fall into ____ classes based on somatic, gonadal and dauer phenotypes.\Question: Choose the right answer from options given a) ten b) six c) eight d) no
answer:
b


question:
Chimps have long childhoods and are dependent on their mother's care for ____ years.\Question: Choose the right answer from options given a) nine b) five c) two d) six
answer:

b