+523.+ An Interrogation Point should be placed after every direct
question.
A direct question is one that can be answered. An indirect question is
one that cannot be answered. If I say, _Why do you not study?_, I am
asking a direct question to which you can give an answer; but if I say,
_I wonder why you do not study_, I have asked an indirect question which
does not require a direct answer.
Why do you not go? (_Direct_)
He asked why you did not go. (_Indirect_)
+524.+ When an interrogative clause is repeated in the body of another
sentence, use the interrogation point after the clause, and begin the
clause with a capital letter. For example:
The question, _Shall we be involved in war?_, should be settled by
the people.