I think it definitely depends on your own personal priorities. If you want to really get a strong foundation in the life sciences, AP Biology is an excellent choice. However, if you want to have a broad foundation of skills in the sciences and want to explore, AP Physics C might be better. But it may be better in this situation to take physics since you’ve already taken biology and chemistry and exposure to a new subject is a good thing. However, you might have to put in a lot of time to understand physics; it is difficult and very different from other science courses (I took both AP Physics 1 and AP Physics C in high school).