The most willing helpers are D. Themselves
Students learn better when they aren't hungry. Which leads to a healthier and more knowledgeable community (knowledge is power). When these students graduate they will be able to work and provide more, physically and mentally. Thus making the community as a whole more enriched and profitable.
I did this test. The answer is A) It taught Theseus to be patient.
I believe it is Subjunctive.