What is the difference between drift current & diffusion current ?

The main difference between the drift current and diffusion current is the corresponding reaction of the semiconductor materials in the electric fields. In electric fields, when semiconductor material's movement go along with the direction of the electric field it is called drift current, but when it tends to go from high concentrated area to lower concentrated area then it is diffusion current.

B) as the temperature increases, the kinetic energy of the particles increases.|-/

The answer is a.  i hope this