I'd say C, "The acrylic pods are created in many sizes, including big, small, and medium, as well as other sizes needed by the scientists; they are connected to the seafloor by chains and float some distance below the surface, so the plants are not destroyed by storms."
Answer: The 1964 Civil Rights Act was Congress's most expansive civil rights law ever passed. It included systematic steps to abolish segregation in Jim Crow and counter racial discrimination. The 1965 Voting Rights Act eliminated obstacles to black francs in the South, prohibiting poll taxes, literacy tests, and other initiatives that essentially prohibited African Americans from voting. Segregationists sought to prohibit the state level from enforcing federal civil rights legislation.