Final answer:
An individual with a sexual destiny belief would likely support the idea that having a sexual soulmate is key to great sex, which aligns with answer (D).
Step-by-step explanation:
An individual with a sexual destiny belief is likely to adhere to the idea that sexual compatibility is something predetermined by fate. This means that they are more inclined to believe that there is a 'sexual soulmate' with whom one will have inherently perfect chemistry, rather than thinking that sexual satisfaction is achieved through effort and mutual development. Therefore, the correct answer to the question would be D) finding a sexual soulmate is crucial to having great sex. This belief is counter to the sexual growth belief, where individuals think that sexual compatibility can be developed over time with effort and communication.