The answer is: B.drained their economic resources
During its military build-up, soviet union allocate most of their government budget to military and they also require the manufacturers in its territory to focus their operation in military weapons , vehicles, and supplies.
This caused the economic resources in soviet unions to be drained and the needs for goods that unrelated to military became abandoned.
<span>Encrypted data has a key, so the people who are authorized to see it can access it. If a person leaves the key unsecured, whether in physical form or in their computer system, an unauthorized person could come into possession of the key and access the data. A physical parallel is if you left your car key in the ignition, anyone could come along and take your car.</span>
Maybe if the planet signifies a weather?