Answer:
D. home-country nationals, host country nationals, third-country nationals, and inpatriates
Step-by-step explanation:
The four basics sources in which the multinational companies would tap for positions are as follows:
Home country nationals
Host country nationals
Third country nationals
Inpatriates
In this the MNC would be ready for tap for the positions
Therefore the last option is correct
And, the other options would be incorrect