What constitutes 'adulteration' in a legal sense?

Adulteration in a legal context refers specifically to the addition of any substance that may render a product impure or unsafe for human consumption. This means that if a harmful substance is mixed with something intended for human use, it compromises the integrity and safety of that product.

The focus here is on the potential harm that the additional substance can have on health, which is crucial in food and pharmaceutical regulations. This definition helps to protect consumers from products that do not meet safety standards and ensures that what is being consumed is free from harmful contaminants.

In contrast, mixing lawful substances can occur without compromising product safety, while creating counterfeit products relates to fraudulent practices rather than health implications. Additionally, using chemical compounds in approved amounts does not constitute adulteration, as it adheres to regulatory guidelines, ensuring product safety. Thus, the key aspect of option B is its emphasis on the danger posed by harmful substances, which is the core of the legal definition of adulteration.