First, an Independent Clause is a clause that can stand alone and still be qualified as a sentence that starts off a paragraph, essay, etc.
Here's an example;
Joe likes sandwiches; his family enjoys them.
"Joe likes sandwiches" is the independent clause, as it can stand alone and still make sense.
Now let's move on to the second part of the problem.
"his crew was the most productive in the entire company."
First, let's take a look at our clause prior to this one. It has a semi-colon, and our new clause has a lowercase letter, indicating it isn't a new sentence/isn't an entire sentence on it's own. This is known as a dependent clause, or what we're dealing with - a subordinate clause.
We have: 1 independent clause 1 subordinate clause
