How does the use of plastic to produce bicycle helmets affect other plastic-using industries? A. It decreases the prices offered by other industries. B. It increases the demand for products of other industries. C. It increases the capital available to other industries. D. It decreases the amount of resources available to other industries.

The correct answer is option D.

Explanation:

The use of plastic to produce bicycle helmets will reduce the amount of resources available to other industries that use plastic. If an industry is making helmets from plastic, they are using plastic as inputs in the production process. This will cause a reduction in the quantity of plastic available.

This plastic is used by other industries as well. They will experience a reduction in the resources available to them.