A method to protect warriors against enemy arrows and spears protecting.
Option C
Step-by-step explanation:
Option C is best choice because it is a phrase defining that, Ashanti nation used the equipment like shields for protecting themselves. It is not incomplete and unclear like other options.
Option B used the singular word 'method' to refer to the military equipment's and other items rather than referring to the use of such items.
Option A a method to protect is only referring to the items that doesn't make any meaning.
Option is D, are also incorrect; as " protection" in D has no noun for which it can substitute logically.
Option E is incomplete used to protect could be accepted. So that's why correct option is C