Questions: "What are the four steps in making pottery?"

The answer is Both it is written as a question rather than a statement and it doesn't refer to the speaker's credibility.

This is correct because a central idea for an informative speech should be a clear, declarative statement that outlines the main point or purpose of the speech. Phrasing it as a question can make it less direct and authoritative.

This is also correct because a well-crafted central idea should establish the speaker's authority or expertise on the topic. By not addressing the speaker's credibility, the central idea may fail to convince the audience of the speaker's qualifications to discuss the subject.

This is not applicable in this context because the phrase "What are the four steps in making pottery?" does not use figurative language. It is a straightforward question.

This is incorrect because the statement does not use figurative language, so not all the answers are correct.

Therefore, the most accurate answer is that the central idea is poorly phrased because it is written as a question rather than a statement and it doesn't refer to the speaker's credibility.