**Core Concept**
The question is testing the student's knowledge of hormone classification, specifically the distinction between protein derivatives and non-protein derivatives. Hormones are chemical messengers secreted by endocrine glands, and they can be classified into several categories based on their chemical nature, including protein derivatives, steroid hormones, and catecholamines.

**Why the Correct Answer is Right**
Steroid hormones, such as cortisol, aldosterone, and estrogen, are not protein derivatives. They are derived from cholesterol and are synthesized in the adrenal glands and gonads. They act on specific steroid hormone receptors in target cells, leading to changes in gene expression and cellular function.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because insulin is a protein hormone produced by the pancreas, making it a protein derivative.
**Option B:** This option is incorrect because growth hormone is a protein hormone produced by the pituitary gland, making it a protein derivative.
**Option C:** This option is incorrect because thyroid-stimulating hormone (TSH) is a protein hormone produced by the pituitary gland, making it a protein derivative.

**Clinical Pearl / High-Yield Fact**
Steroid hormones are lipophilic and can diffuse through the cell membrane to bind to intracellular receptors, whereas protein hormones are hydrophilic and require receptor binding to exert their effects.

**Correct Answer: D. Steroid hormones.**