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Hello everyone.
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So in this particular question we are asked about the attributes of skin that help it act as an active barrier against the pathogens.
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So skin act as a physical barrier to pathogens, right? and the reason that might cause harm to us or our body.
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So skin, it is made up of three layers, right? and these three layers are the thin, they're not.
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Is a thin upper layer which is known as epidermis.
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It is the outermost layer.
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Then we have dermis and in this layer we see presence of hair follicles, right? sweat glands and others.
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Next we are having the third and innermost layer that is our hypodermis and in hypodermis we see presence of blood and lymphases.
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Right now what happens is that the skin it show it is having a slightly low ph that is it shows the presence of acidic environment so the microorganism or we can say pathogens they cannot survive over there and secondly the old cells they are removed right the old cells of the skin they are removed and they are continuously replaced by new ones, right? so they are continuously replaced by new ones.
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So a new barrier is c.
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So now moving on to the option that we are given...