Remove pathos as it is an emotional appeal.This seems to be ethos or theme.
The fourth one is the answer
<span>The question says,'before you use one of the encyclopedias, check .......... its copyright date'. The correct option is A. This is because, the statement is referring to only one of the encyclopedias, and the correct possessive noun for an inanimate object like encyclopedia is it's. 'Their' will only be correct if the statement is referring to all the encyclopedias.</span>
I feel like this could be brought to a matter of opinion, but the major overlying themes I’d say are pride and human limitation!