What dramatic event in 1348 greatly reduced the population of Europe?

Which term refers to a musical texture that features a single, melodic line and nothing else?

a. Monophony b. Polyphony c. Homorhythm d. Homophony

In 1878, Eadweard Muybridge photographed a galloping horse and discovered that:

A. racing horses keep at least one hoof on the ground at all times. B. galloping horses occasionally have all four hooves off the ground. C. racing horses resemble hobby-horses with legs stretched forward and backward. D. off-track betting is an easy way to make a living. E. light-sensitive materials of that day could not stop action.