Improve the following sentence by choosing the most appropriate alternative. If no improvement is needed, select the option corresponding to “No improvement”. Sentence: He reached his destination at night.

Introduction / Context:
This question checks your understanding of correct preposition use with the verb “reach”. The sentence “He reached his destination at night” looks simple, and you must decide whether it is already correct or whether one of the alternatives is better. The key point is that “reach” does not normally take a preposition before its object.

Given Data / Assumptions:

• Original sentence: “He reached his destination at night.”
• The verb “reach” is a transitive verb that directly takes an object without any preposition: “reach home”, “reach the station”, “reach our destination”.
• The phrase “at night” correctly indicates the time at which he reached.
• The intended meaning is that he arrived at his destination during the night.

Concept / Approach:
The grammar rule is:

• “reach + object” (no “to” or “at” before the object).

Examples include: “We reached home late”, “They reached the city by noon.” The time adverbial “at night” is correctly formed and placed. Therefore, we must confirm whether the original sentence follows this rule and whether any option improves it.

Step-by-Step Solution:
Step 1: Check the verb object structure. “Reached his destination” is a correct use of “reach” as a transitive verb with a direct object “his destination”. No preposition is inserted between them, which is correct. Step 2: Check the time expression. “At night” is the standard way to indicate that something happened during the night. So the time phrase is also correct. Step 3: Put the two parts together: “He reached his destination at night.” The sentence is grammatically correct and clear in meaning. Step 4: Compare with the alternatives, none of which follows standard usage as naturally as the original sentence.

Verification / Alternative check:
If you read the original sentence aloud, it sounds natural and matches common English usage. Compare it with sentences like “He reached home at night”, “She reached the village in the evening”. All of these have the same correct structure: “reached + object + time phrase”. Therefore, the original sentence is correct and requires no improvement.

Why Other Options Are Wrong:
Option A: “He reached destination at night.” omits the possessive “his”. While not always wrong in every context, it sounds incomplete and less natural here.
Option B: “At his destination he reached at night.” is awkwardly worded and uses an unnecessary preposition and inversion that do not fit natural English usage.
Option C: “He reached on his destination at night.” incorrectly adds the preposition “on” after “reached”. We do not say “reached on his destination”.

Common Pitfalls:
Many learners wrongly think that verbs like “reach” behave like “arrive” and therefore add prepositions such as “to” or “at” (for example, “reached to the station”). However, “reach” is used without a preposition before the place object. To avoid this error, remember that we say “arrive at the station” but “reach the station”. The two verbs behave differently despite having similar meanings.

Final Answer:
The original sentence is already correct, so the best choice is No improvement.