Final answer:
Dalal measures water quality to determine the health of a watershed.
Correct answer is B
Step-by-step explanation:
Dalal measures water quality to determine the health of a watershed. Water quality includes factors such as pH, dissolved oxygen levels, presence of pollutants, and the concentrations of nutrients.
By analyzing these factors, Dalal can assess the overall health and ecological integrity of the watershed.
Correct answer is B