## Core Concept
The core concept here revolves around the serological markers that are tested during the screening process for blood donation. The primary goal is to ensure that the donated blood does not contain infectious agents, such as viruses, that could be transmitted to the recipient. Hepatitis B and C, HIV, and syphilis are among the infections for which blood donations are routinely screened.

## Why the Correct Answer is Right
The correct answer, **HbsAg (-ve)**, indicates that the individual is not currently infected with hepatitis B virus (HBV) or is not in the highly infectious phase of the disease. HBsAg (Hepatitis B surface antigen) is a protein on the surface of the hepatitis B virus. A negative result typically means the person is not infectious with HBV at the moment of testing. This status is considered safe for blood donation because it significantly reduces the risk of transmitting HBV to the recipient.

## Why Each Wrong Option is Incorrect
- **Option A:** **HbsAg (+ve)** - A positive HBsAg result indicates that the person is infected with hepatitis B virus and can transmit the infection. Therefore, this individual is not safe for blood donation.
- **Option B:** **Anti-HCV (+ve)** - A positive result for antibodies against hepatitis C virus (HCV) indicates exposure to HCV. This does not necessarily mean the person is infectious but does indicate a risk of transmitting the infection. Hence, this individual is generally not considered safe for blood donation without further testing.
- **Option D:** **Anti-HIV (+ve)** - A positive result for antibodies against HIV indicates that the person is infected with HIV. Individuals with HIV are not eligible to donate blood due to the risk of transmitting the virus.

## Clinical Pearl / High-Yield Fact
A key point to remember is that blood donation centers use a variety of tests to screen donations, including nucleic acid testing (NAT) for HIV, HBV, and HCV, in addition to serological tests. The goal is to ensure the safety of the blood supply. Individuals with certain infections or conditions may be deferred temporarily or permanently from donating blood.

## Correct Answer Line
**Correct Answer: C. HbsAg (-ve)**