The correct complimentary close of an official letter is:
C. I/We look forward to hearing from you.
Explanation:
1. In official correspondence, it is important to use a polite and professional tone in the closing of a letter.
2. The phrase "look forward to hearing from you" is a common and formal way to express anticipation of a response from the recipient.
3. Option C correctly uses the gerund form "hearing," which is the appropriate grammatical structure in this context.
4. Options A and B contain errors in grammar and prepositions ("about" and "to hear") that make them incorrect choices for a formal letter closing.
By choosing option C, "I/We look forward to hearing from you," you convey professionalism and courtesy in your official communication.
