Somebody has to come test the water before you can use it , " she said . I stood in the middle of my brick walkway , staring down at a long list of names and numbers , remembering the cartoon Dad used to quote whenever someone questioned his love of sailing . " A boat is just a hole in the water you pour money into . "
Why does the water need to be tested ?
Pick the best answer from the following options:
A. It 's the law in their city .
B. They have gotten sick before .
C. For the city to make more money .
D. To ensure it is safe .


D