Select the most appropriate option to fill in blank number 1.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. requires.
Context: Talking about what effective communication needs.
Subject: “Effective communication” – singular.
Correct Verb Form: “Requires” – matches singular subject.
Incorrect options:
Is natural – does not match the logical idea of a need
Require – plural; subject-verb disagreement
Is fitting – stylistically weaker, less direct
Correct Word: Requires
Final Sentence: Effective communication in the digital age requires proper etiquette.
Hence, the chosen option is correct.