What is defined as the size of the opening in the lens when exposing a photograph to light?

With reference to the melody,

A. CD 1:17 presents a more decorated version of the original melody than CD 1:18. B. CD 1:18 presents a more decorated version of the original melody than CD 1:17. C. both CD 1:17 and CD 1:18 emphasize unaltered versions of the original melody. D. both CD 1:17 and CD 1:18 present the same decorated version of the original melody.

Which type of dramatic structure is exemplified by a musical revue or an evening of one-act plays?

A. cyclical structure B. climactic structure C. serial structure D. episodic structure