Okay, let's tackle this question about the treatment of pediculosis corporis. First, I need to recall what pediculosis corporis is. It's a body lice infestation, right? So the question is asking for the treatment of choice (TOC) for that.

Now, the treatment options for lice typically involve topical insecticides. The common ones I remember are permethrin, malathion, pyrethroids, and maybe some others like lindane. Permethrin 1% is often the first-line for head lice, but does it also apply to body lice? Wait, body lice are a bit different. They live in clothing, so maybe the treatment approach is similar but the drug might be different.

Wait, I think permethrin is used for both head and body lice. But sometimes, other agents like malathion or ivermectin might be used. Oh, but ivermectin is usually oral, right? For body lice, maybe permethrin is still the TOC. Let me check in my mind.

Body lice treatment also involves washing clothes and bedding in hot water. But the question is about the TOC, which is the drug. So the correct answer is likely permethrin. Let me verify. Permethrin is a synthetic pyrethroid, effective against lice. It's applied topically. Malathion is an organophosphate, another option. But maybe the TOC is permethrin for all types.

Wait, for pediculosis corporis, permethrin 1% is indeed the first-line treatment. So the correct answer should be permethrin. The other options might include things like lindane, which is less preferred due to toxicity, or pyrethrin, which is another option but not as commonly first-line.

So, putting it all together, the TOC for pediculosis corporis is permethrin. The other options would be incorrect because they either have different mechanisms, are not first-line, or have other issues like toxicity. The clinical pearl here is that permethrin is the go-to for lice, and lindane is a red herring due to its risks.

**Core Concept**
Pediculosis corporis refers to infestation by body lice (*Pediculus humanus corporis*). The treatment of choice (TOC) targets the lice and their eggs (nits) via topical insecticides that disrupt neuronal function in arthropods.

**Why the Correct Answer is Right**
Permethrin 1% is the TOC for pediculosis corporis. It is a synthetic pyrethroid that binds to voltage-gated sodium channels in lice, causing prolonged depolarization and paralysis. It is preferred due to low systemic toxicity, ease of application, and efficacy against both lice and nits. Unlike head lice, body lice infestations also require laundering of clothing and bedding in hot water to eliminate lice reservoirs.

**Why Each Wrong Option is Incorrect**
**Option A:** Lindane is incorrect. It is a gamma-benzene hexachloride with neurotoxic effects in humans, reserved for cases where other treatments fail due to safety concerns.
**Option B:** Malath

✓ Correct Answer: C. Disinfection of all clothes and beddings