Which of the following may be used as relative pronouns?
select all that apply.
before
which
who
where

"Who", "which" and "where" can be used as relative pronouns.

Explanation: A relative pronoun is pronoun that introduces a relative clause, that is to say a dependent clause which adds information about an antecedent. There are many relative pronouns: two of them are "who", which refers to a person, and "which", which refers to a thing or an animal. Moreover, although "where" is a relative adverb, it can also be used as a relative pronoun. When "where" is used as a relative pronoun, it provides additional information about a place. An example of this is the sentence "This is the hotel where we stayed last summer".

she was killed in her home during hurricane katrina. b.she was relocated to another town after hurricane katrina. c.she died trying to get victims of the hurricane to safety. d.she is still missing — police do not know where she is.