PLEASE ANSWER under which circumstances might a u. s. president send federal soldiers to enforce order in a state?

a)if a state needed help in collecting income tax

b)if a state's elected governor committed a crime

c)if a state collected tolls on an interstate highway

d)if a state's police force could not keep the peace

Option (D). If a state police force could not keep the peace

Explanation: The United State of America President can send federal soldiers to enforce order in a state if the state police could not keep the peace. In case of emergency like a natural disaster, epidemic, serious public health emergency, terrorist attack, any attack on the United State territory, or other conditions, the president can send federal troops to contain the situation.

the answers are a b and d