Which constitutional power provides the basis for the president’s day-to-day control of u. s. foreign relations?
a. the power to appoint and receive ambassadors

b. the power to appoint justices of the supreme court

c. the power to inform congress of the “state of the union”

d. the power to summon congress in times of national emergency

The answer here is A.

Explanation:

Those powers of the president as head of the executive branch  are listed in the US Constitution , Article II, Section 2.

d

explanation:

i think that this is the best answer, but im sorry if this is wrong

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.