निम्नलिखित में से कौन-सा conjunction (समुच्चयबोधक) है?

उत्तर: C — Conjunctions join words, phrases, or clauses. Although, because, but, and, or, yet, so, while, unless are all conjunctions. 'Quickly' and 'happily' are adverbs; 'beautiful' is an adjective.