Directions: In the following question, a sentence is given in which the last part is omitted. You must choose the most suitable alternative among the five that should fill the omitted part making the sentence grammatically correct and contextually meaningful. If none of the given alternatives are appropriate to fill the blank, choose option (e) i.e. “none of these” as your answer choice. Twitter does not want users to migrate to other platforms through links shared via tweets or retweets to ensure users spend more time on the platform which in turn _______ .

### Concept & Sentence Completion The core concept here is syntactic alignment and logical progression. The phrase "which in turn" functions as an adverbial connector indicating consequence, requiring a verb phrase that acts as a result of users spending "more time on the platform." ### Step-by-Step Solution 1. **Analyze the preceding clause:** "...to ensure users spend more time on the platform which in turn [blank]." 2. **Determine required part of speech:** The pronoun "which" refers to the entire preceding action (spending more time). It acts as a singular subject, so we need a singular verb phrase. 3. **Evaluate options grammatically:** - Option (a) lacks a verb. - Option (b) introduces another "which," creating a redundant and broken clause structure. - Option (c) introduces a new independent subject "it," violating the dependent relative clause structure. - Option (d) provides a singular verb "boosts" and a logical consequence (more time on platform = higher ad revenue). ### Exam Strategy & Shortcut Identify the grammatical requirements of the blank before reading the options. "Which in turn" directly demands a verb showing the result of the previous action. Only option (d) supplies a grammatically correct verb phrase. ### Common Pitfall Students often select option (b) because "which" is a common relative pronoun, but they fail to realize the sentence already contains "which in turn," making an additional "which" grammatically redundant. ### Final Answer Therefore, the correct answer is **boosts its position to increase advertising revenue.**