The option that makes the most sense for the party by Mr and Mrs Atoll is one case of 24 sodas at $18.50.
The reason for this is that given the guests they are entertaining, this option is the most cheapest and effective.
How to calculate for the way that the drink would go round
a. Each bottle is $1.5. Two bottles for 1 = 1.5x2 = 3 dollars
b. six packs at 5$. One= $0.88
c. A case of 24 sodas at $18.5. one soda is going to be 18.5/24 = $0.77
d. Two cases of 24 soda at 18.5 = $1.54
Given the calculations that have been done above, option c at $0.77 is the cheapest. It would require them to send the less money in getting sodas that would go round twice for 10 people.
Read more on the economy here: brainly.com/question/1106682