The correct answer is (c) Silicon.
Silicon is a semiconductor, which means that it can conduct electricity under certain conditions. It is the most common material used in IC chips because it is abundant, inexpensive, and has a number of desirable properties for electronic devices.
Carbon is a non-metal that is found in all living things. It is also used in some electronic devices, such as carbon nanotubes. However, it is not as widely used as silicon in IC chips.
Boron is a metalloid that is used in some electronic devices, such as solar cells. However, it is not as widely used as silicon in IC chips.
Germanium is a semiconductor that was used in early IC chips. However, it has been largely replaced by silicon due to its higher cost and lower performance.
In conclusion, the IC chips used in modern generation of computers are made of silicon. Silicon is a semiconductor, which means that it can conduct electricity under certain conditions. It is the most common material used in IC chips because it is abundant, inexpensive, and has a number of desirable properties for electronic devices.