## Core Concept
In a case-control study, researchers investigate the association between an exposure (e.g., use of the contraceptive pill) and an outcome (e.g., breast cancer) by comparing individuals with the outcome (cases) to those without the outcome (controls). The goal is to identify potential risk factors or associations.

## Why the Correct Answer is Right
The correct answer, which is not provided, would typically relate to a fundamental principle of case-control studies. These studies are particularly useful for examining rare outcomes or exposures and can provide valuable insights into potential causes. However, they are susceptible to biases, such as recall bias, where cases may recall their exposure differently than controls.

## Why Each Wrong Option is Incorrect
- **Option A:** Without the specific details of option A, we can infer that if it's a true statement about case-control studies, it would relate to their design, advantages, or limitations. If it's incorrect, it might misrepresent how case-control studies are conducted or interpreted.
- **Option B:** Similarly, if option B is incorrect, it could be overstating or understating the capabilities of case-control studies, such as their ability to establish causality or their susceptibility to certain biases.
- **Option C:** This option would be incorrect based on a misunderstanding of epidemiological study designs, specifically regarding how case-control studies can or cannot be used to infer causation or association.
- **Option D:** As with the other options, without specifics, we acknowledge that if it's listed as incorrect, it likely presents a misconception about the strengths, weaknesses, or applications of case-control studies.

## Clinical Pearl / High-Yield Fact
A key point to remember is that case-control studies are **retrospective** and start with the outcome (disease) and look back in time to assess exposures. This design is particularly useful for studying rare diseases or outcomes but is prone to biases like recall bias.

## Correct Answer: D.