Select the most appropriate option that can substitute the underline word in the given sentence. If there is no need to substitute it, select ‘No substitution’. At first, we cruised in the local river beside trying anything more adventurous.

Correct answer: before

Explanation: The correct answer is B.✅ The word "beside" is incorrect in this context. "Beside" means next to and is not appropriate for expressing sequence of events. The correct word is "before", which logically indicates the order of actions. Correct sentence: At first, we cruised in the local river before trying anything more adventurous. ❌"Already" and "earlier" don't fit the grammatical structure here. ❌"No substitution" is incorrect because "beside" makes the sentence illogical.