Question

How can body language, tone of voice and eye contact improve your ability to secure a job

during an interview?
These strategies actually don't communicate much so don't worry about putting
them into practice.
They help interviewers pay attention only to the words you use so you can
communicate clearly.
They can communicate a positive energy which can mean more interest and
enthusiasm for the job.
They allow you to say less which is always good in an interview.

Answer 1

c: They can communicate positive energy which can mean more interest and enthusiasm for the job.

Explanation: Doing those will help you get the job :D