Modifiers of adjectives

[grace.ggui]

The sentence reads:

His studies led Louis to propose the concept of an age in which ice sheets had existed in current temperate areas.

Ignoring the other grammatical errors, why is current temperate areas wrong?

Why can't current describe the area? It's a current area, isn't it?

[RonPurewal]

Hi,
Please read the forum rules before posting.

We need:
* The original source of the problem
* The full text of the problem, including all answer choices.

Thanks.