Question

lotteries, markets, barter, rationing, and redistribution of income are all methods commonly used to
allocate scarce resources.
collect taxes.
improve productivity.
invest in education and technology.

Explanation:

Lotteries, markets, barter, rationing, and income redistribution are mechanisms to distribute limited (scarce) resources. Collecting taxes is about revenue for government, not resource allocation. Improving productivity involves efficiency in production, not these methods. Investing in education/tech is a specific investment, not related to these general allocation methods. So the correct option is the one about allocating scarce resources.

Answer:

A. allocate scarce resources.