Elections held halfway through a president's four-year term are known as
midterm elections.
presidential elections.
general elections.
the primaries

The best and most correct answer among the choices provided by the question is midterm elections. 

A midterm election refers to a type of election where the people can elect their representatives in the middle of the term of the executive or of another set of members.

Hope my answer would be a great help for you.    
If you have more questions feel free to ask here at .  

Utwddjhudzslwpei9eurjfhyrf hi87tegd

Social and economicthe concept of international social responsibility is the expectation that mncs concern themselves about social and economic effects of their decisions regarding activities in other countries.