I believe it's the first sentence.
{In disjointed sentences, the cook and the correspondent argued to the difference between a life-saving station and a house of refuge.}
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.
Answer:
depends on how you use the word though
Answer:
prepared a complete topic on words
