Which of the following means a polyphonic development of several short themes?

Which description fits this example best?

a. Complex melodic lines played at a frantic tempo over rhythm section time keeping b. Collective improvisation c. A simple riff repeated several times d. A danceable arrangement of a popular song

As a potter's wheel turns, a lump of clay can be lifted and shaped by hand into a vessel, in an action called

a. throwing b. raku c. forged d. wrought e. tumi