**Core Concept**
Targeted intervention programmes for HIV aim to reduce the spread of the virus among vulnerable populations. These populations often have high-risk behaviors or are more susceptible to HIV transmission.

**Why the Correct Answer is Right**
Targeted interventions focus on specific groups, such as commercial sex workers, migrants, and street children, who may be more likely to engage in high-risk behaviors or have limited access to healthcare services. Industrial workers, on the other hand, are not typically considered a high-risk group for HIV transmission. This is because they often have stable employment, regular income, and access to healthcare services, reducing their vulnerability to HIV.

**Why Each Wrong Option is Incorrect**
**Option A:** Commercial sex workers are considered a high-risk group for HIV transmission due to their occupation, which involves frequent interactions with multiple clients. Targeted interventions among this group aim to reduce the spread of HIV through education, condom distribution, and regular testing.
**Option B:** Migrant laborers are also considered a high-risk group for HIV transmission due to their mobility, limited access to healthcare services, and increased likelihood of engaging in high-risk behaviors. Targeted interventions among this group aim to reduce the spread of HIV through education, condom distribution, and regular testing.
**Option C:** Street children are considered a vulnerable population for HIV transmission due to their limited access to healthcare services, unstable living conditions, and increased likelihood of engaging in high-risk behaviors. Targeted interventions among this group aim to reduce the spread of HIV through education, counseling, and regular testing.

**Clinical Pearl / High-Yield Fact**
Remember that targeted intervention programmes for HIV focus on populations with high-risk behaviors or limited access to healthcare services. These populations often include commercial sex workers, migrants, street children, and injection drug users.

**✓ Correct Answer:** D. Industrial worker