What is a pronoun that can replace the words the sun's rays?

Answer 1

The pronouns that take the place of the noun phrase 'the sun's rays' are they as the subject of a sentence of a clause, and them as the object of a verb or a preposition.

Examples:

On a chilly day, I seek out the sun's rays. They chase away the chill. (subject of the second sentence)

The sun's rays come through this window, so put the plant there to catch them. (direct object of the verb 'catch')