Answer:
Debbie knew that studying for her test was important; consequently, she cleared her schedule for the night. (second option)
Explanation:
The word consequently is a conjunctive adverb. It is used as a transitional word to link two independent clauses in one sentence. In such cases, you need to put a semicolon before the transitional word and a comma after it.
There are different types of transitional words and phrases. Consequently is a transitional word of consequence or result.