Question

hip hop was first developed in the 1960s.
new styles of hip hop are still being created today.
so that before even though ← joining words
revise your work. which joining word helps show that two ideas are opposite?
so that hip hop first developed in the 1960, new styles of hip hop are still being
created today.

Explanation:

To determine the joining word showing opposite ideas, analyze each: "so that" shows purpose, "before" shows time order, "even though" introduces a contrast (opposite ideas). The two statements (hip hop developed in 1960s, new styles still created) have an opposing relationship (old origin vs. ongoing creation), so "even though" is correct.

Answer:

even though