The main purpose of the closing section of a cover letter is To let the reader know how he or she can contact you. That is option C.
A cover letter is defined as a type of letter that is usually written by an employee to the employer to convince them of their suitability for a job role or position.
The letter usually has the following parts:
The conclusion part should contain information of how the employer will contact the employee when chosen for the job position.
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