Why we can't use here 'consider' because both think and consider give us...?

[Suneth G Korala]

English Language Tests, Intermediate level

ESL/EFL Test #709 "Time of the Year", question 4

B: I would have thought the reason was quite obvious if you ......... about it.

(a) ponder
(b) think
(c) consider
(d) believe

English Language Tests, Intermediate level

ESL/EFL Test #709 "Time of the Year", answer 4

B: I would have thought the reason was quite obvious if you think about it.

Correct answer: (b) think
_________________________

why we can't use here consider because both think and consider give us simmilar meaning
Suneth G Korala

[Conchita]

The verb 'consider' wouldn't fit in the test sentence because you don't normally consider about something -- you consider something or doing something.