**Core Concept**
Hormonal fluctuations, particularly an increase in androgens, play a significant role in the development of acne. Sebum production and keratinization are influenced by the action of androgens on sebaceous glands and hair follicles.

**Why the Correct Answer is Right**
Androgens, such as testosterone, stimulate the sebaceous glands to produce more sebum, leading to clogged pores and acne. The enzyme 5-alpha-reductase converts testosterone to dihydrotestosterone (DHT), a potent androgen that exacerbates acne. Additionally, insulin resistance and hyperinsulinemia can lead to increased androgen production, further contributing to acne development.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because [insert reason here, e.g., "it is not a direct cause of acne"].
**Option B:** This option is incorrect because [insert reason here, e.g., "it is a contributing factor but not a primary cause"].
**Option C:** This option is incorrect because [insert reason here, e.g., "it is a treatment option, not a causative factor"].

**Clinical Pearl / High-Yield Fact**
The use of oral contraceptives can help regulate hormonal imbalances and reduce acne severity in women. This is because they contain estrogen, which counteracts the effects of androgens on sebaceous glands.

**Correct Answer: D.**