Read the sentence. Since its establishment in 1961, the Peace Corps has helped countless people build better lives for themselves.
Which correctly identifies the italicized clause?
A. elliptical clause
B. noun clause
C. adverb clause
D. adjective clause
(It between B, C or D)

i've read it so how can i ?

you can't answer this. more information is needed.

homework should not be banned because it tells the teacher if you were paying attention in class or not. it assures the teacher that you understand the material so you can move on to different material.