The correct answer is: B. Acceptor doped
A pMOSFET (p-channel metal-oxide-semiconductor field-effect transistor) is a type of MOSFET (metal-oxide-semiconductor field-effect transistor) that uses a p-type semiconductor material as the channel. The channel is doped with acceptor impurities, which give it a net positive charge. When a voltage is applied to the gate, it creates an electric field that attracts electrons from the source and drain regions. This creates a current flow through the channel, which can be controlled by the gate voltage.
A donor-doped semiconductor is a semiconductor that has been doped with donor impurities. Donor impurities are atoms that have one more electron than the semiconductor atoms. When these impurities are added to the semiconductor, they donate their extra electrons to the semiconductor, which creates a net positive charge in the semiconductor.
An acceptor-doped semiconductor is a semiconductor that has been doped with acceptor impurities. Acceptor impurities are atoms that have one less electron than the semiconductor atoms. When these impurities are added to the semiconductor, they accept electrons from the semiconductor, which creates a net negative charge in the semiconductor.
Therefore, a pMOSFET is an acceptor-doped semiconductor because it has a net positive charge in the channel.