I WILL MARK BRAINLIEST!

Which statement accurately describes Jacob Riis?

He took heart-wrenching photos of the hardships that immigrants to America faced.

He exposed the truth about child labor in the factories, mills, and mines of turn-of-the-century America.

He designed several of America's most beautiful green spaces, including New York's Central Park.

He developed a system of generators to transmit alternating current over wires for hundreds of miles.

I can't find it in any of my notes or books, please help