Question

what was martin luther’s main goal in posting the 95 theses?
to establish a new church
to overthrow the pope
to elicit truth about penance
to abolish indulgences

Explanation:

Martin Luther posted the 95 Theses to criticize the sale of indulgences and call for reform. His main goal was to address the abuse of indulgences, so "To abolish indulgences" is correct. The other options are incorrect: he didn't aim to start a new church (the Protestant Reformation was a by - product), overthrow the pope, or just elicit truth about penance in this context.

Answer:

To abolish indulgences