Topic: Adjective (বিশেষণ),

Best Answer Explained in Below-:

The term "nuptial" is derived from the Latin word "nuptialis," which directly pertains to marriage or weddings. Essentially, it relates to ceremonies, rituals, or legal unions between individuals, primarily in the context of a heterosexual relationship. The word often describes aspects associated with weddings, such as nuptial vows, which are the promises made by individuals during the marriage ceremony, or nuptial traditions that vary across different cultures.

In contrast, the other options do not share a direct relationship with the concept of marriage. For example, "night" pertains to a time period, "Neptune" refers to the Roman god of the sea and, by extension, the planet, and "Norway" is a country. None of these terms link to the act or notion of marital union. Therefore, among the given options, "B) Marriage" is the clear and correct association for the word "nuptial," effectively connecting it to a significant aspect of human life centered around companionship, commitment, and social structure.