Can someone tell me what thee answer is, this one is confusing ​

I think it's B

Explanation:

In the central idea it doesn't say anything about the first long lasting light bulb or it's affordability.

I hope this helps! :)

the economic activity signified in that scenario is a. production

in general, market production makes reference to the elaboration of a product or service which is destinated for economic purposes (to be sold) at money-price in a market. such product or service has to be principally tradable for money.

there is no money exchange involved in distribution, generalized reciprocity or balanced reciprocity.