Minimalist techniques have been applied in many different kinds of music, including what?
a. techno
b. reggae
c. rock'n'roll
d. hip-hop

The answer is (a.) techno.

Among the options, techno is the genre of music that use the minimalist technique. In Techno, there is a subgenre called "minimal techno" which is using the minimalist technique. It is originally developed in 1990.

Answernon-religious themes became more popular, and people also wanted to show off their wealth because painting was a sign of this at the time;