Question

Which of the following activities are considered plagiarism?

I. presenting someone else’s work as your own

II. paraphrasing information but crediting the source

III. quoting someone without including quotation marks

I and II
III only
I and III
I only

Answer 1

I and III

Answer 2

I and III because I is taking someone else's work and pretending it's yours; III is the same thing.
Both are pretty much the definition of plagiarism.

Answer 3

I and III