The world _____ by the animals in Arctic Tale

[Volcano1985]

The world _____ by the animals in Arctic Tale _____ rapidly changing from a perpetually frozen wonderland to an unstable maze of melting ice and snow.

A) inhabited / is
B) having inhabited / was
C) inhabited / has been
D) being inhabited / had been
E) inhabiting / will be

Why A, why not C?

[Volcano1985]

Anyone?

[5jj]

You may be getting no response, because some people may be getting bored with this type of question. You clearly have got hold of a series of questions prepared by somebody whose command of English is not brilliant, or who has little experience of writing this type of exercise - or both.

You are usually correct in thinking that another answer is possible or better. In this case, both A and C are possible.