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').
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Question: All loci have ____ or two alleles.\Question: Choose the right answer from options given a) no b) six c) four d) one

Answer: d


Question: Summer is the hottest of the ____ temperate seasons , falling between spring and autumn .\Question: Choose the right answer from options given a) six b) four c) no d) nine

Answer: b


Question: Some species have a complete array of accessory sex glands, including the above ____ types.\Question: Choose the right answer from options given a) five b) seven c) no d) three

Answer:
d