اساتذة الانجليزية-- English teachers

[aiisshsaak]

.Hello, I just want to ask about question #3 inText Exploration

:Ask question which underlined words answer

We use the telescope to magnify distant stars.
:and I answered as follows
?what do we use telescope for

and I know it shouldn't be like this: why do we use the telescope? that's absurd
because the underlined words are telling the use of the telescope not the cause
plz point me to the right direction
Thx in advance...