Answer:
A. Howe was too preoccupied with taking Philadelphia to provide the support needed in Saratoga.
Step-by-step explanation:
Howe set his sights on Philadelphia for a number of reasons. Philadelphia, of course, was the American capital and the meeting place of the Continental Congress. Howe also apparently hoped to draw Washington into a battle that might destroy the Continental Army once and for all. Because of this, he left Burgoyne to fight alone in the Battle of Saratoga where the Continental Army won.