1. The sun - plants - caterpillar - fish - bear
(I already answered but ima answer again)
The answer is A, 'a mammal' because it goes with the copulative verb 'to be', i. e., 'is'.
Answer:
A ray is a part of a line that has one endpoint and goes on infinitely in only one direction. You cannot measure the length of a ray. A ray is named using its endpoint first, and then any other point on the ray
Explanation:
the is a definite article meaning that you cannot use it
"an" can only be used before words beginning with vowels
therefore the answer is" a"