Some studies have shown that peppermint odor increases people’s mental sharpness, especially when they solve math problems. which best describes how this could be a valid scientific claim?
if it is tested in a controlled setting with repeated results
if the test is published on wikipedia
if the scientist was previously peer reviewed
if the math problems are easy problems

The first statement illustrates a valid scientific claim.

Explanation:

A scientific claim refers to a condition, which comprises the outcomes that are achieved after the execution of experimental procedure and reasoning on the basis of the grounds of a specific natural event or phenomenon. The relevant evidence or fact supports the claim. The outcomes are only regarded as effective when the recurrent trials using a similar methodology are performed under controlled circumstances.

If it is tested in a controlled setting with repeated results

Explanation:

This is how a hypothesis is accurately tested and because it is in a controlled setting, many more people can also recreate the same experiment

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products