Answer:
The answer is option C.
Step-by-step explanation:
Here, according to the given question, margin of error means that the number of people who rated the vacation as 'delightful' ranges between 81% (83-2) and 85% (83+2) of the population at a 95% confidence interval. The range is formed as 81% to 85% as its given that the margin of error is ±2% .
<em>Therefore, only option C is having both the ranges, 81% and 85%. So, option C is the correct answer.</em>
C.It can be concluded, with 95% confidence, that between 81% and 85% of all employees will rate the vacation policy as "delightful."