What did Thespis do that made him such a famous theatre person?

The chekker eventually became known as the ____

A) portative organ B) bagpipe C) harpsichord D) clavichord

What is the function of the surface of the N Building?

a)  to act as an interactive billboard b)  to illuminate an urban public area c)  to decorate the façade d)  to project moving images