Sarah felt very anxious after shaking hands with someone who looked like he had a cold, but washing her hands made her feel better.

Obsessive-compulsive disorder.

Explanation:

Obsessive-compulsive disorder: In psychology, the term "obsessive-compulsive disorder" is determined as a mental disorder in which a person feels or experiences unwanted and recurring ideas, thoughts, and sensations which is referred as obsessions that generally makes the person driven to perform a specific task repeatedly and is referred as compulsions.

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska

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