Topic: Pair of Word,

Best Answer Explained in Below-:

The correct answer is **A) Illicit** because the term "illicit drugs" refers to substances that are illegal to sell, use, or manufacture. The context of the sentence implies a legal restriction, specifically concerning drugs that are banned by law due to their harmful effects and the potential for abuse. Illicit drugs include narcotics and controlled substances that are not prescribed by a medical professional, highlighting their illegal nature.

In contrast, option **B) Elicit** means to draw out or bring forth, which does not fit the context of the sentence about drug sales. Option **C) Ban** is a noun that refers to a prohibition but cannot directly fill the blank as it does not describe the type of drugs. Lastly, **D) Expire** means to come to an end or no longer be valid, which is unrelated to the legality of drugs. Therefore, "illicit" is the most appropriate choice to complete the sentence accurately, as it clearly conveys the legal prohibition on certain types of drugs within a country.