Option 1 -> (A), (B), (C), (D) - Starts with a verb without a subject, making it grammatically incorrect.
Option 2 -> (A), (C), (B), (D) - Begins with "is" without establishing what the subject is first, creating an incomplete structure.
Option 3 -> (B), (A), (D), (C) - Opens with a prepositional phrase lacking context and places the subject at the end illogically.
Option 4 -> (C), (A), (B), (D) - Correctly starts with the subject "English, a global language," followed by the verb and complements in proper order.
Hence, Option 4: (C), (A), (B), (D) -> The sentence reads: "English, a global language, is one of the most popularly spoken languages in the world for millions of speakers across the globe and serves as a common medium of expression and communication." This follows proper grammatical structure with subject first, then verb, and appropriate modifying phrases. -> correct