A..To argue that Locke is to be disregarded on account of his prejudice against Christian belief | B. To argue that Locke's arguments purporting to show that some qualities are 'in the mind' only apply in fact to all qualities | ||
C. To argue that Locke is mistaken on all major points of his philosophy | D. To argue that though most people will inevitably begin by thinking his (Berkeley's) immaterialism is ridiculous, with a little mathematical training anybody could be got to see that it must be true | ||
B. is the answer.
A. is wrong - Locke defended Christianity.
C. is wrong - Berkeley was a disciple of Locke's except on the one (admittedly significant!) point of immaterialism.
Berekely seems to have thought that in his arguments for immaterialism he was defending common sense. Though he was a mathematician, he didn't believe that you had to be one to accept his metaphysical views. So D. is wrong.