The synonym of REDEEM is: 

Redeem has two meanings: to compensate for flaws or to gain or recover custody of something.

Now, taking a look at the available possibilities,

extent: the extent to which something is known or believed. The extent of flood devastation is one illustration of extent.

Fulfill: to accomplish, realize, or carry out as necessary or promised

reconsider: to think about something again, especially if there is a prospect of success.

recover: to re-establish or restore to something (Recuperate)

After deciphering the meanings of the offered options, we can conclude that the word "recover" shares the most similarities. Option "D" is the correct response.