12. What is the purpose of an MLA signal phrase? (Select all that apply.) A signal phrase announces the source's name, it provides context for the source material, and it
announces the author's attitude toward the topic.
A signal phrase is put in parenthesis at the end of the sentence and includes the author's last name
and the page number if appropriate.
A signal phrase is one method to introduce paraphrases, summaries, and direct quotations.
A signal phrase indicates to the reader that the paragraph is coming to an end.

A signal phrase is one method to introduce paraphrases, summaries, and direct quotations.

Explanation:

An MLA signal phrase is one that shows the reader of a text that a direct quote, summary, or paraphrase is about to happen. For this, the MLA signal phrase presents clear signs such as presenting words such as "according to" and "indicates," so that the reader has no doubt that the text will suffer an external consequence of a text by another author.

it would most likely be b. your welcome.

c. a group of tribes that formed a confederacy