It is sufficient to infer the context of a piece based purely on the title. true or false?

This is FALSE.

Explanation:

Each piece of writing does have a title or sub-title. But, it is not correct to infer the context of the piece based purely on the title. Because the whole text would provide more detailed information on the given heading. It would elaborate different or related aspects of the given title.

So, to properly understand the whole writing, it is not correct to conclude the meaning of the writing depending solely on what the title is.

I think that the wiki source would be the least credible out of all of them.

Explanation:

The reason why I think that it is the wiki source is because all the other ones are government websites or school related sites that can be trusted but wiki can be incorrect an outdated. Take wiki how for an example.