Question

Find out the correct preposition
You have to leave the Park ____ it gets dark

• A. after
• B. before
• C. later
• D. due to

Hint:

Always verify the grammatical requirements of time words: - Before and after can be followed directly by a full clause (Subject + Verb). - Later requires than to connect to a clause or noun phrase. - Due to must be followed by a noun phrase, never a clause.

Answer 1

The Correct Option is B

Concept: The sentence establishes a logical time constraint or deadline regarding an action ("leave the Park") in relation to an environmental event ("it gets dark"). We need to find a subordinating conjunction/preposition of time that yields a logical, safety-oriented rule typical of public parks. Let us evaluate the temporal and causal relationships of all options:
• Option (A) after: If visitors leave the park *after* it gets dark, it means they stay in the park throughout the twilight and into the night. While possible, park regulations typically mandate exiting prior to darkness for safety reasons, making this an unlikely standard instruction.
• Option (B) before: "Before" establishes a clear preventative deadline, indicating that the departure must take place prior to the onset of darkness. This aligns completely with safety instructions and typical park operating schedules worldwide.
• Option (C) later: "Later" is an adverb, not a preposition or conjunction capable of linking a clause like "it gets dark". To function in this context, it would require "than" (e.g., *later than...*), so it is grammatically incorrect.
• Option (D) due to: "Due to" is a prepositional phrase used to show causation (meaning *because of*). It must be followed by a noun or noun phrase, not a full independent clause containing a verb like "it gets dark". Thus, it is structurally flawed. Thus, "before" is both structurally and contextually correct: "You have to leave the Park before it gets dark."