Can someone me at my science homework

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

the answer would be d : p

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.