Option 1: (A), (D), (C), (B) -> Creates a fragmented sentence with "skills" starting before establishing the main subject.
Option 2: (D), (B), (A), (C) -> Places "with the workforce demographics changing" awkwardly in the middle, disrupting sentence flow.
Option 3: (B), (A), (C), (D) -> Makes "skills" the apparent subject instead of "leadership effectiveness," creating confusion.
Option 4: (B), (D), (C), (A) -> Forms a proper sentence: "With the workforce demographics changing each year, leadership effectiveness will be increasingly determined by skills like adaptability and emotional intelligence."
Hence, Option 4: (B), (D), (C), (A) -> The introductory clause (B) sets the context, followed by the subject (D), the verb phrase (C), and the object (A), creating a grammatically correct and logically coherent sentence about modern leadership requirements -> correct