Tsunami waves
Hope it's help you
Answer:
Similarly, enzymes can only function in a certain pH range (acidic/alkaline). Their preference depends on where they are found in the body. For instance, enzymes in the intestines work best at 7.5 pH, whereas enzymes in the stomach work best at pH 2 because the stomach is much more acidic.
Along with peanuts<span> and shellfish, tree nuts are one of the </span>food allergens<span> most often linked to anaphylaxis — a serious, rapid-onset </span>allergic reaction<span> that may be ... to determine the presence of</span>allergen-specific<span> immunoglobulin E, an antibody that binds to </span>allergens<span> and triggers the release of chemicals that </span>cause<span> symptoms</span><span>.
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I don’t know why they make everyone type more than 20 characters but B sounds like the most reasonable answer.