Final answer:
The most likely meaning of 'garrison' is to defend. A garrison refers to a group of soldiers stationed in a particular location to protect it from enemy attacks. Hence the correct answer is option C
Step-by-step explanation:
The most likely meaning of 'garrison' is C. defend. In the context of warfare or military strategy, a garrison refers to a group of soldiers stationed in a particular location to protect it from enemy attacks. The purpose of a garrison is to defend the area and maintain control. This term is commonly used in history and military studies.