Among 4 choice, which is have most concentration of nitrites ? (reason to causing blue baby syndrome)

Question

A. A brand new subdivision of high-priced “McMansions,” complete with golf course, tennis courts and swimming pool.

B. A textile plant that produces Braves T-shirts.

C. An organic farm with a herd of 50 cows and a 10-acre field of zucchini.

D. A mountain lake that has become overgrown with algae.

Answer 1

This is a lab question that should have experimental data to go along with it.