Answer:
D) The Constitution of the United States would need to be changed to change the system for assigning electors
Step-by-step explanation:
According to the Unites States of America Constitution, the election carried out at either the federal level of state level is based on the electoral college votes rather than the popular vote of the citizens. This means that, the party with the highest percentage of electoral college vote wins the whole electoral votes coming from that state.
In the case of New Mexico State, the easiest way to enforce their wishes of assigning proportional electoral votes according to shares of popular votes gathered during the election would be through the chnging of the consitution of the United States of America.