The correct answer is: a $100,000 life insurance policy at $0.55 per $1000 per month (more economical)
Step-by-step explanation:
(1)a $100,000 life insurance policy at $0.55 per $1000 per month
It means:
$0.55*100*12 = $660 [There are 100 thousands in $100000 and there are 12 months in the year]
(2)a $100,000 life insurance policy at $170 per quarter.
It means:
$170*4 = $680 [There are 4 quarters in a year]
As $680 > $660 therefore Option (A) is the economical option.