What are earthworks?
a. artistic pieces that involve materials from nature
b. artistic pieces that involve preserving an area in danger
c. artistic pieces that involve raw materials found at the site of the piece
d. natural artistic pieces formed without human influence

The answer is C: artistic pieces that involve raw material found at the site of the piece.

Earthwork or Land art is the use of  natural material such as rocks and vegetation found in a place for making an artistic work directly in the in the landscape, by sculpting into earthwork. It's an art conceptual movement that emerged in the 1960's and 1970's. Spiral Jetty, by Robert Smithson is the most famous earth work.

frances ellen watkins harper writing was influenced by: b. the education she received growing up in the north.

she was born in baltimore, maryland, on september 24, 1825. after the death of her parents, her uncle reverend william watkins, a teacher at the academy for negro youth, raised and educated her. she also continued educating herself by accessing a library of the family she worked for, beginning writing poetry afterwards. as a civil rights activist and abolitionist, watkins greatly influenced her life and work.

it is believed to be alfred, lord himself