Question

recycling -- by ezekiel
body paragraph 2
another material that is important to recycle is plastic.
since plastic makes up a large percentage of our trash, recycling it is
important. to recycle plastic, you can ask your local recycling center
which kinds of plastics it can recycle.
which piece of research should be used to fill in the
blank?
many communities have recycling programs already in place that
accept paper.
glass is amazing because it can be used over and over again.
plastic was 12 percent of the trash put in u.s. landfills in 2018.

Explanation:

The paragraph is about recycling plastic. The first option is about paper recycling, the second about glass, and the third about plastic's percentage in U.S. landfills which is relevant to the plastic - recycling topic.

Answer:

Plastic was 12 percent of the trash put in U.S. landfills in 2018.