Explanation

The word "nuptial" is derived from the Latin term "nuptialis," which relates specifically to marriage and weddings. It is often used in contexts that involve matrimonial ceremonies, vows, and related celebrations. Thus, when one encounters the term "nuptial," it is almost universally associated with the notion of a wedding.

Among the provided options, "A) wedding" stands out as the only choice directly connected to the concept of nuptials. In contrast, the other optionsB) Mars, C) Lunatic, and D) Earthdo not have any linguistic or thematic ties to marriage. Mars is a planet (and also the Roman god of war), "lunatic" refers to a historical term for someone believed to be insane, often associated with the moon, and Earth is simply our home planet.

In summary, "nuptial" clearly aligns with weddings, making option A the correct and relevant answer. This term encapsulates the essence of love, commitment, and the formal bond formed during a wedding ceremony.