The dopant for a semiconductor among the options provided is antimony.
Antimony is commonly used as a dopant in semiconductor materials because it can introduce extra electrons into the semiconductor lattice, making it an N-type dopant. This is useful for altering the electrical properties of the semiconductor, such as increasing its conductivity. Thallium, indium, and boron can also be used as dopants, but they have different effects on the semiconductor's properties.
