A diagnosis of male hypoactive sexual desire would be made when a male:

A) does not initiate sex because of the inability to have an orgasm.
B) experiences a lack of sexual desire specifically due to overexertion and exhaustion.
C) is obsessed with thoughts about sex, thereby letting it interfere with daily functioning, for a consistent period of six months.
D) has little desire for sex, does not fantasize about sex, and may be unresponsive when a partner initiates sex.

Male hypoactive sexual desire is characterized by a persistent and recurrent lack or absence of sexual fantasies and desire for sexual activity, as well as decreased initiation of sexual activity and/or receptiveness to sexual activity when it is initiated by a partner. Option A refers to difficulty having an orgasm, which is not necessarily related to a lack of desire. Option B refers to exhaustion and overexertion, which can cause physical fatigue but is not related to a lack of sexual desire. Option C refers to sexual obsession, which is not the same as hypoactive sexual desire disorder.