Select the most appropriate antonym of the given word.
Capital

The correct answer is (d) Extra.
Explanation:
The antonym of "capital" in this context (as in essential or main) is "extra." "Capital" refers to something of primary importance, while "extra" refers to something additional or not essential.
Hindi Meaning: मुख्य (Mukhya), अत्यावश्यक (Atyaavashyak)
Synonyms: Essential, Primary, Main, Fundamental, Crucial.
Antonyms: Minor, Secondary, Unimportant, Trivial, Insignificant.
Meanings of all options:
· Regular: Normal or standard; not an antonym of "capital."
· Fundamental: Basic or essential; not an antonym of "capital."
· Principle: A fundamental truth or proposition; not an antonym of "capital."
· Extra: Additional or unnecessary, which is the opposite of "capital" (main or essential).