What scientific innovation occurred that affected the art that was produced during this period? a. Albert Einstein’s Theory of Relativity b. the invention of the phonograph c. the polio vaccine was first developed d. penicillin was discovered

It depends on what type of third separates the three notes.for example: if you have two mayor thirds is an "aumented chord"if you have two minor thirds is an "diminued chord"if you have one mayor first and then one minor is a "mayor chord"and inverted is a "minor chord"