The correct answer is Option 1. Explanation & Key Takeaways: • The primary issue in the sentence is the incorrect use of the word "daily" as the final segment without a finite verb. • The sentence contains a subject, "The Shatabdi Express," and a time expression, "at 6 a.m.", but it lacks a proper finite verb. • The phrase "Express arriving" contains a participle, but it does not form a complete predicate by itself. • The sentence should contain a finite verb such as "arrives" to make it grammatically complete: "The Shatabdi Express arrives at 6 a.m. daily." • Thus, the error is located in part 1, where "daily" is used in a sentence that lacks the required finite verb. Therefore, the correct answer is Option 1. Correct Sentence: "The Shatabdi Express arrives at 6 a.m. daily." Related Concepts: • Option 2: "Express arriving" – The phrase is incomplete because "arriving" is a participle and cannot function as the main finite verb here. It should be changed to "Express arrives." • Option 3: "The Shatabdi" – This segment is grammatically correct and forms the beginning of the subject when combined with "Express." • Option 4: "at 6 a.m." – This is a grammatically correct time expression indicating when the train arrives. • Option 1: "daily." – This segment is the error-containing part because the sentence needs a finite verb before the adverb of frequency to form a complete grammatical sentence.