In option (a), the use of the preposition 'of' is contextually irrelevant as the sentence requires a preposition that denotes the specific time at which the delivery is to be made. Instead, the preposition 'on' (indicating the day or part of a day during which an event takes place) is to be used.
In option (b), the noun 'disturbance' is incorrectly used in place of a verb. Instead, the verb 'disturb' is to be used in place of the noun.
In option (d), the verb 'remains' (stay in the place that one has been occupying) is a contextually irrelevant word as the sentence talks about a person who resembles the younger brother of the subject. Instead, the verb 'reminds' (cause someone to think of (something) because of a resemblance) is to be used.
Option (c) is a sentence that is grammatically and contextually correct without any errors.
Hence, the correct answer is option (c).
Note:
A Preposition is a word placed before a noun or a pronoun or a noun equivalent (pronoun, adverb, gerund, infinitive, adverbial clause, or any clause that can be used as the object of the preposition) and shows a relationship in space or time or a logical relationship between two or more people, places, or things in a sentence.
Examples
I. The teacher scolded the child for being late.
II. We're going to a party.
· The words in bold are called prepositions because they normally take position before (pre) a noun/pronoun or a noun equivalent (pronoun, adverb, gerund, infinitive, adverbial clause, or any clause that can be used as the object of the preposition.
· The noun/pronoun which is used with a preposition is called its Object.