Word (D) is inappropriately used in the given sentence. 'Resent' is a verb which means 'feel bitterness or indignation at (a circumstance, action, or person)'. We require an adjective, and not the verb to qualify the noun 'episode'. So, the adjective 'recent' (means ' having happened or having been done a short time ago') should replace the verb 'resent'.
All other words are correctly spelt and are appropriate in the context of the sentence.
The correct sentence is: I usually watch that show every week, but I missed the most recent episode.
Hence, option (b) is the answer.