What is the adjective clause in the sentence?

Poison ivy, which causes an itchy rash, is something to avoid.

A.

to avoid

B.

is something

C.

poison ivy

D.

which causes an itchy rash

In the statement " Poison ivy, which causes an itchy rash, is something to avoid."

The adjective clause is which causes an itchy rash.

Thus, the answer is letter D.

> adjective clause does not change the meaning of the sentence if removed.