Correct option is D
The correct combination of the words that should replace each other would be “(A) - (D) and (B) - (C)". The sentence thus formed will be “Developing a comprehensive marketing strategy is essential for any business to succeed in today's competitive marketplace.”
Competitive means: striving to outperform others and win in a competition.
Succeed means: achieving a desired outcome or goal, often through hard work and perseverance.
Essential means: absolutely necessary or indispensable for a particular purpose or task.
Comprehensive means: complete and thorough, covering all aspects of a particular subject or topic.