Answer:
B. HCN
Step-by-step explanation:
PCN stands for Parent Country National. A PCN is an individual who is working in the country other than his or her native or origin country.
HCN stands for Host Country National. A HCN is the employee of the organization who is a citizen of the country where the foreign subsidiary is been located.
TCN stands for Third Country National. A TCN is an individual of other nation who is hired by a government who represents neither his host country or the government.
Hence in the context, a person who returns to his native country and works at an MNE which have its headquarter in the country where the individual studied is termed as a Host Country National or HCN.
Thus the correct option is (B).