When the president calls engineers at NASA to congratulate them on a successful space mission he or she is acting as which of these A. Chief diplomat b. commander in chief c. head of state d. legislative leader

c. Head of State.

Explanation:

Under the Executive role of the President, being the Head of State is one such position and obligation he has to maintain. In this role as Head of State, the President of the United States is responsible for representing the state, i.e, the nation of America.

So, in the act of congratulating the engineers at NASA on their successful space mission, he is exhibiting his role as the Head of State. And by that, it means he's representing the whole people of America in congratulating the engineers on their success.  

you probably know the answer. stop asking stupid questions and making me waste my time. j.k. ; )   b.t.w. what are three ratios equivalent to 5 : 11? thx