Answer:
a.Effectiveness is the most important aspect of competence.
Step-by-step explanation:
Competence may be defined as the ability of a person or an individual to perform a task or to do any particular work with success or effectively. Competence is the state of being efficient or fit for any role.
Effectiveness is an important aspect of competence. It is an important part of competency. It is the degree of producing something successfully or to perform a task with great success. Being effective is being competent for the job.