10 pointsWhich source is an example of a primary source

D. A book about the history of snack food in the United States.

Explanation:

Primary source is sources created as a time or event is occurring.

D. A book about the history of snack foods in the United States

Explanation:

All of the others can't get exact information on because people like different things and allergies as well.

hello, never fear the humanspider is here!

answer: this is what i could find because i never done this work before.

it's likely the answer would be c.

- a - you could speak slowly, but if you used the same humor and a higher complexity or the same level of complexity, they might understand what to do.

- b - the humor presented might not be understandable to the 1st graders.

- d - explaining where peanut butter comes from is irrelevant to the homeeco class.

**c - by adjusting the level of complexity, you are going to a point of talking where everybody understands you, if you what i'm saying.**

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~

your friendly neighborhood human spider.

the whisper is the answer, hope this : )