A. convince
B. warn
C. provide
D. protect
✅ The correct answer is option A.
Convince : cause (someone) to believe firmly in the truth of something.
Convince : cause (someone) to believe firmly in the truth of something.
Warn : inform someone in advance of a possible danger, problem, or other unpleasant situation.
Provide : make available for use; supply.
Protect : keep safe from harm or injury.
Assure : tell someone something positively to dispel any doubts.
Synonym of Assure is Convince