<u>Option B</u> To help them defeat a Soviet invasion
<u>Introduction:</u>
The Soviet Afghanistan War was fought between Afghanistan rebels called the Mujahideen and the Soviet supported Afghanistan government.
<u>Explanation</u> :
The United States supported the Afghanistan rebels in order to try and overthrow the communist government and to prevent the spread of communism of the Soviet Invasion.
<u>Conclusion</u>
Also in other words the US supported Mujahideen to defeat the Soviet Invasions.