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').

Quarks also come in ____ 'colours', terms for a property a little like electrical charge.\Question: Choose the right answer from options given a) three b) nine c) six d) no
a

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
b

Wetlands Learn about ____ types of wetlands found in many areas around the world.\Question: Choose the right answer from options given a) four b) seven c) six d) ten

a