1st one because that would be domestic not foreign
Answer:
Increase in police patrol presence decreases crime rates.
Explanation:
A hypothesis is a proposed explanation. In your particular question, you are providing an explanation as to why crime rates may be decreasing. So, crime rates would decrease if police patrol presence was increased.
Most nations when they import goods from another country the importing country charges a tax called a tariff. When parter countries drop the tariffs for imported goods that is called free trade