Final answer:
As the commander-in-chief, the president has multiple roles in military matters. The president acts as the ultimate decision-maker, consults with the joint chiefs of staff, and serves as the symbolic leader of the military.
Step-by-step explanation:
The president, as the commander-in-chief, has multiple roles and responsibilities in military matters:
- **Acts as the ultimate decision-maker in military matters:** As the highest-ranking military officer, the president has the power to make final decisions on military strategies and operations.
- **Is obligated to meet with the joint chiefs of staff and usually takes their advice:** The president consults with the joint chiefs of staff, who provide valuable expertise and advice on military matters. While the president is not required to follow their advice, their input is typically considered.
- **Is the symbolic leader of the military:** The president serves as the symbol of the nation's armed forces and represents the military in various ceremonial and official capacities.
Therefore, options a, b, and d are all correct answers to the question.