**Core Concept**
Basic amino acids are a class of essential amino acids that have a basic side chain, which is positively charged at physiological pH. This characteristic allows them to interact with acidic groups and participate in various physiological processes, including neurotransmission and protein binding.

**Why the Correct Answer is Right**
The basic amino acids include lysine, arginine, and histidine. Lysine is a crucial component of the collagen molecule, and its deficiency can lead to growth retardation and other symptoms. Arginine is involved in the urea cycle and serves as a precursor for nitric oxide, which plays a key role in vasodilation. Histidine is a precursor for histamine, a neurotransmitter involved in allergic responses and immune function.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is blank and does not provide a distractor.
**Option B:** This option is also blank and does not provide a distractor.
**Option C:** This option is blank and does not provide a distractor.

**Clinical Pearl / High-Yield Fact**
Remember that basic amino acids are essential for various physiological processes, and their deficiency or excess can have significant clinical implications. For example, lysine deficiency can lead to growth retardation, while arginine deficiency can impair wound healing and immune function.

**Correct Answer: C. Lysine, Arginine, Histidine**