You buy a house on a small inland lake and your front lawn ends at the water's edge. A lawn care company representative suggests you fertilize the lawn to keep it lush and green. You agree to the treatment and then discover there is a major weed problem in the lake. The most likely cause of the weed problem isa. nitrogen.
b. nitrites.
c. sulfates.
d. phosphates.
e. carbon.

d. phosphates.

Explanation:

Weed -

It refers to the unwanted plants growing along with other plants , and are unnecessarily crowding the area and sucking the major nutrients from the soil , is referred to as a weed .

A weed growing along with other plants hence need to be taken out , as they disturb the other plants as well .

Excess of phosphates leads to the growth of these weeds .

Hence , from the given scenario of the question ,

The correct answer is d. phosphates.