a speaker can use logos in a speech so people can vote for him/her
a. three major supporting details.
There are three supporting details for the main idea on the theories to explain why people yawn. Each of the supporting details contains a key word or phrase to indicate that they indeed are a main supporting detail. These key words and phrases are "One explanation is...", "A second theory...", and "Yet another explanation...". These all show the supporting detail is contained in the sentence. The last sentences just build and connect to information that has already been introduced.
An anemometer measures wind
In my opinion, the correct answer among the choices listed above is the second option. APA is the style guide used by professionals who are writing articles for publication. APA stands for American Psychological Association.