Premise:
Mr Q: 1) The number of people drinking mineral water is increasing.
2) Having mineral water delivered to one's home is more logical than buying bottled water.
Mr S: 1) Buying bottled mineral water is cheaper than having it delivered.
Conclusion:
Mr Q: 1) The delivery of water to homes will soon become more popular.
Mr S: 1) The delivery of water to homes will not become more popular.
Task: Strengthening Mr Q's claim
Let's scan the options
(A) Water that contains a high amount of minerals per volume is known as hard water............
Irrelevant(B) Signing up to a water delivery service requires that the consumer buy a fairly expensive dispenser from the supplier.............
Weakening Mr Q's claim(C) Bottles are easier to recycle than containers for mineral water dispensers...............
Weakening Mr Q's claim(D) Having water delivered usually results in the monthly cost of drinking water to be about 20% more expensive than water from other sources...........
Weakening Mr Q's claim(E) Many consumers are willing to pay extra in order to avoid the hassle of having to purchase, carry, store, and recycle mineral water bottles.................
Strengthening Mr Q's claimOA should be E