The way in which<em> Back to the Future Il </em>demonstrates the concept of historical contingency is b. Marty and Doc's single action of traveling to the future led to a chain of events that ended up creating an alternate 1985 Hill Valley.
<h3>What is a historical contingency?</h3>
This refers to the chance-influenced events that have substantial long-term effects.
Hence, we can see that The way in which<em> Back to the Future Il </em>demonstrates the concept of historical contingency is b. Marty and Doc's single action of traveling to the future led to a chain of events that ended up creating an alternate 1985 Hill Valley.