Which sentence is in the passive voice?

a. it was two days ago that my friend fixed the car.
b. the car was fixed by my friend two days ago.
c. two days ago, my friend fixed the car.
d. my friend fixed the car two days ago.

Which two characteristics does a memoir have? describes an event or a period from the writer's life attempts to convince the reader of something makes an argument about a specific topic is written in first-person point of view is written in third-person point of viewpls me < 3