Which describes the experiment of becquerel and the curies
![Which describes the experiment of becquerel and the curies class=](https://us-static.z-dn.net/files/dcc/3e9cdb3920350c5cee82a2d8a4f90534.png)
The correct answer is D. Becquerel showed that uranium gave off radioactivity, and the Curies discovered other radioactive elements.