Question

what does the idiom in this text suggest? cell phones once cost an arm and a leg, but today the majority of people can afford them. cell phones were once very expensive. cell phones were once popular items to trade.

Explanation:

The idiom "cost an arm and a leg" means something is very expensive. In the context of the text, it implies that cell - phones were once very costly.

Answer:

Cell phones were once very expensive.