Question

According to the Dean Kamen article, which is not a drawback to the water purification tools that exist?

1) A
2) B
3) C
4) D

Answer 1

The Dean Kamen article does not mention any drawbacks to water purification tools.

Step-by-step explanation:

The article does not mention any drawbacks to the water purification tools that exist. Therefore, none of the options A, B, C, and D are a drawback to the existing water purification tools.