Which sentence from the passage is a complex sentence?
a. after the 1950s, jazz continued to change and branch into new subgenres.
b. trumpeter miles davis and pianist herbie hancock are some famous jazz musicians from this time period.
c. in the 1930s and 1940s, jazz music began to adopt the big band sound.
d. the style of jazz changed as well when bebop became dominant jazz form and sound.

D. The style of jazz changed as well when bebop became dominant jazz form and sound.

This sentence has a dependent clause "when bebop became...sound" and an independent clause "The style of jazz changed as well". A and C have prepositional phrases at the beginning but not dependent clauses. 

The answer is D got off of study island ( :

Explanation:

It's about understanding the sexual feelings and attractions we feel towards others, not who we happen to have sex with. ... There are different types of sexuality, and it can take time to figure out what fits right with you.

One of the most important parts of your health and taking care of your body is knowing about your sexuality. It means understanding all about your body, your feelings, and healthy relationships. ... Almost every teen thinks he or she knows all about sex, but sexuality is more than sex.

Questioning is the word for people who are in the process of discovering their sexual orientation. You can be questioning at any age, for as long as is appropriate for your unique journey.

Is it natural to be confused or question your sexuality at a young age? Yes, this is normal and very common. Sexual orientation — being gay, lesbian, bisexual, or straight — is about sexual attraction. All of these sexual orientations are perfectly normal.

It's normal to feel confused or curious about whether you're straight, gay, lesbian, bisexual, asexual or queer. Lots of people also feel this way because others in their life may that think sexuality is a 'choice' or assume that being straight is 'normal'.