Answer:
8). - D). It decreases the amount of resources available to other industries.
9). - C). Decrease in positive incentives to work.
Step-by-step explanation:
8). The use of plastic to produce bicycle helmets would affect the other plasticizing industries by availing them a lesser amount of resources to them. As we know, the demand for one is based on the sacrifice of the other. Thus, if the resources are limited and if one begins to consume more it affects the availability of that resources for the other. Thus, option D is the correct answer to this question.
9). People look for alternate opportunities for several reasons. But if a large number of employees are quitting a job at the same time, it calls for thought. As per the options, the option that best compliments this thought is option C which suggests the decrease in positive incentives to work. Thus, employees are losing interest and seeking other opportunities. Hence, the answer to this question is option C.