Answer:
a. of the tasks, duties, and responsibilities of the job to be performed.
Step-by-step explanation:
Job description - 
It is written statement , which mentions all the task , role a person need to perform in a job . 
The skills , job responsibilities , duties , all the requirements , education qualification are written on the statement . 
Hence , from the question , 
The correct statement regarding job description is ( a. ) .