Which of the following statements is true?
a. modal jazz is based on a single scale for long periods of time.
b. modal jazz includes rapid chord changes.
c. modal jazz does not allow musicians to develop and explore melodic possibilities.
d. modal jazz never really caught on as a viable approach to jazz improvisation.

a. Modal jazz is based on a single scale for long periods of time.  

Explanation:

 Model Jazz is a type of jazz music that was developed in the later period of 1950s.

Modal jazz uses modal scales for slow harmonic rhythm improvising and pedal points to suppress functional harmonic relationships. It is basd on very few static harmony or chords progressions. It is based on a single scale for a longer period of time.

Modal jazz lay importance on improvising with fewer pitches to select from.

Hence the answer is --

a. Modal jazz is based on a single scale for long periods of time.  

the most likely outcome of fewer loon territories is that hawks would increase in proportion because the benefit of victory would be greater. hawks and loons are natural rivals of resources and victories in the game, since the lakes drying up affected the loons, the hawks would be benefited from the drought.

panem is a communist totalitarian dictatorship where all the resources and how they are allocated belongs to the capitol. the districts exist only to provide goods and services for the capital and most of the citizens live in poverty. it is a police state where the "peacekeepers" use force and threats to keep the people under control. dissent is outlawed and those who disobey the law are executed, flogged, or turned into avoxes. the games are another means in which the ruling elite in the capitol exert their power over the districts. when reading the books i drew parallels between panem and the soviet union and north korea. in no way is panem capitalist. the people in the capitol are wealthy but the majority of them are involved in the government somehow. it was the same way in the former soviet union where bigwigs in the communist party and high ranking government officials were given access to goods, services, medical treatments not available to the general public. if you think panem has a capitalist economy you need to brush up on your economics.