D. 1) few 2) little 3) many 4) much

The correct answer is **1) few**. The sentence is describing that almost no creatures are outside in the cold. 'Few' is used for countable nouns in the plural, and in this context it is being used for creatures, so it fits best. 'Little' is used for uncountable nouns, and 'many' and 'much' mean 'a lot', which would mean a lot of creatures were outside. Therefore, the correct sentence would be 'The days and nights became cold and very **few** creatures went out.'