**Core Concept**
Conditionally essential amino acids are those that can be synthesized by the human body under normal circumstances, but may need to be supplemented in times of stress, growth, or disease. This concept is crucial in understanding the nutritional requirements of patients with various medical conditions.

**Why the Correct Answer is Right**
The human body can synthesize certain amino acids, such as glutamine, arginine, and tyrosine, through various metabolic pathways. However, in situations like severe burns, trauma, or infection, the demand for these amino acids increases, and the body may not be able to produce them at a sufficient rate. This is why conditionally essential amino acids become essential during these times. Glutamine, for instance, is a critical fuel source for enterocytes and immune cells, and its supplementation has been shown to improve outcomes in critically ill patients.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the correct conditionally essential amino acids.
**Option B:** This option is incorrect because it does not accurately describe the concept of conditionally essential amino acids.
**Option C:** This option is incorrect because it is not a conditionally essential amino acid.

**Clinical Pearl / High-Yield Fact**
It is essential to note that the requirements for conditionally essential amino acids can vary depending on the specific disease or condition. For example, patients with HIV/AIDS may require higher doses of glutamine due to its role in immune cell function.

**Correct Answer:** B. Non-essential amino acids under certain conditions