Answer:
B) Through my participation in these activities and various community service projects, I have learned the importance of personal responsibility, teamwork, and commitment.
Step-by-step explanation:
A sentence is a group of words that gives precise and complete meaning. It is concise, consisting of a main clause and probably one or more subordinate clauses. It could be in the form of a command, a statement, a request etc.
A main clause contains subject, object and predicate. This makes a main clause to give a complete meaning. But a subordinate clause contains a subject and a verb, and cannot give a complete meaning.
To revise the given sentence, it is best written as:
Through my participation in these activities and various community service projects, I have learned the importance of personal responsibility, teamwork, and commitment.