I need help 10 points

In the second stage of resource development, a person makes

a. products directly from natural resources.
b. fossil fuels
c. deliveries of products
d. raw materials into things that people use

Respuesta :

Answer:

I think it's letter D and A because see the explanation below

Explanation:

The second stage examines resources from the points of view of technology, economy and need

A. Produce directly from natural resources