What’s countable noun? a. furniture b. destination c. money d. advice

The countable noun is destination.

This is because for it is uncountable for furniture, as it's a collection of certain things, such as chairs or tables, which those are countable.
Money is uncountable too, it doesn't have any separate parts.
Advice is uncountable also, as it's a kind of idea and abstract.

Therefore the one left is destination. It can be written as distinctions as a plural form.

The answer is a furniture because all others are uncountable