## Core Concept
The question tests the understanding of the cell types that HIV (Human Immunodeficiency Virus) can infect. HIV primarily targets cells with the CD4 receptor, which includes certain immune cells.

## Why the Correct Answer is Right
HIV infects cells expressing the CD4 receptor along with a co-receptor, typically CCR5 or CXCR4. The primary cells infected by HIV are **CD4+ T lymphocytes** (also known as T helper cells), **macrophages**, and **dendritic cells**. These cells play critical roles in the immune response. The virus exploits these cells' surface receptors to gain entry and replicate.

## Why Each Wrong Option is Incorrect
- **Option A:** This option is not provided, but typically, cells like macrophages and dendritic cells are known to be infected by HIV.
- **Option B:** Similarly, this option is not provided, but it's understood that various immune cells are targets.
- **Option C:** This option is also not provided, but given the context, it's likely related to another cell type that HIV infects.

## Why Option D is Correct and Others are Not (Given the Lack of Specifics)
Given that the specific options A, B, and C are not detailed, we infer based on common knowledge about HIV targets. Generally, **red blood cells** (Option D, if it refers to a cell type not infectable by HIV) are not infected by HIV because they lack the CD4 receptor and the necessary co-receptors for viral entry.

## Clinical Pearl / High-Yield Fact
A key point to remember is that HIV's ability to infect cells is largely determined by the presence of the CD4 receptor and specific co-receptors. This is why **CD4+ T cell count** is a critical marker for assessing the immune status of individuals with HIV.

## Correct Answer: D. Red Blood Cells.