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').

Sugar beet is strongly self-sterile setting few or ____ seeds under strict isolation.\Question: Choose the right answer from options given a) three b) no c) five d) nine
b

Honeybees have ____ jobs.\Question: Choose the right answer from options given a) ten b) one c) three d) two
d

Most trees still show ____ signs of being affected by the disease.\Question: Choose the right answer from options given a) no b) ten c) five d) one

a