I am not quite sure what you want because that is not a question. Therefore there cannot be an answer. But, if you were looking for an opinion on that sentence I can give you that. First of all, caressed may not be the right word to use. You could go into more detail though.
Such as:
The sun looked down upon the plant, it reached out and lifted it up from the rain.
It could be along those lines, I hope that helps I really didn't know what you wanted to hear.
Let us dissect each sentence to tell which of these does not follow the rules for subject-verb agreement.
A.) The subject is 'each of the students' while the verb is 'is'. More particularly, the verb refers to 'each' which is singular. So, this is correct.
B.) The subject is 'student' while the verb is 'were'. The word 'were' is the paste tense of are which is used for a plural subject. But since student is singular, then the verb should have been 'was'. So, this is incorrect.
C.) The subject is 'my dog and my cat' which pertains to two nouns, thus it is plural. It agrees with its plural verb 'are'.
D.) The subject is 'Tom' while the verb is 'does'. Both are intended for singular use. So, this is correct.
Therefore, the answer to this is letter B.
