Which situation best describes the act of reducing?
paying bills online instead of sending paper through the mail
donating gently used clothes and household items
using plastic bags a second time to avoid buying new ones
buying products that can be recycled so they don’t end up in the trash

paying bills online instead of sending paper through the mail

Explanation:

In today's era everyone is aware about the Climate change and wants to contribute towards environment protection. A simple technique is to follow four R's which are: Reduce, Reuse, Recycle and Refuse. The four examples given over here are examples of each R as explained below:

Reduce:  paying bills online instead of sending paper through the mail as we are reducing the paper use over here.

Reuse: donating gently used clothes and household items so that they can be reused. Using plastic bags a second time to avoid buying new ones.

Recycle & Refuse: buying products that can be recycled so they don’t end up in the trash

d. learned preferences i believe is your answer