Which word completes “products which would ... be unavailable” in the international trade sentence?

Question

International trade has the effect of gaining access to some products which would ... be unavailable.

Answer choices

1. in no case
2. on no account
3. otherwise
4. by no means

Answer

Otherwise — option 3.

Explanation

Otherwise refers to the alternative situation: without international trade, some products would not be available.

The full sentence is International trade has the effect of gaining access to some products which would otherwise be unavailable.

“In no case”, “on no account”, and “by no means” express negation or prohibition, rather than the conditional relationship needed here.