Question

My friend is______then me.
A.elder
B.older
C.eldest
D.oldest

Answer 1

Hi dear,
ur answer is elder

Answer 2

My friend is OLDER THAN me.

Note : it's thAn, not Then !

Why we didn't use eldest/oldest : The comparison is between two people and also see the next reason for ELDEST !

Why we didn't use "Elder":

Well, elder is not only an adjective, it's generally a noun, and if used as an adjective it should be followed by a noun immediately, like elder brother (we do not say ELDER THAN BROTHER !)