Which research method is a poll in which the researcher gathers facts or attempts to determine the relationships among facts?

A survey

Explanation:A survey is a method of collecting data about particular information of certain individuals.

It studies participants by focusing on facts or to get opinions on particular topics

It can be used to study behavior of people concerning a particular situation or other aspects such as issues on beliefs, ethnics and religion and it is effecient because a large amount of data can be collected and be used in shaping particular situations.

answer; (c) on the left side; ; ; ; ; ; ; ; ; ; ; ; ; speech is localized on the left side of the brain;

i think it is the third one.