Implied (or implicit) textual evidence is suggested but not directly stated. When a reader comes across implied textual evidence, they have to:
put together details in the text to draw a conclusion and make educated guesses.
Reading between the lines is very vague, but you do have to infer (or draw a conclusion) with this technique.
Finding direct statements in the text that leave no room for doubt is explicit evidence (directly stated). This is the only one I would not mark.
A Line graph shows trends over time
The answer is <span>c. Etymology</span>