This police office is placing a sign outside a rail station. he is enforcing the ruling in
a d. c. v. heller
b plessy v. ferguson
c marbury v. madison
d brown v. board of education

according to the quotation from booker t. washington's 1895 atlanta compromise speech.

in the great leap from slavery to freedom . . the masses of us are to live by the production of our hands . . we shall prosper . . as we learn to dignify and glorify common labor.

washington believed that  hard work had its own kind of dignity.

explanation:

mark brainliest and have a great day!