The methods which will likely help Will in overcoming his feelings of apprehension are preparation and practice.
Public Speaking is a skill which comes to a person with time. A person requires confidence and knowledge to be able to speak in front of a group of people.
There are five basic elements of public speaking, namely-
Proper and careful preparation of the topic and practicing the flow are the two methods which will likely help him most in overcoming his feelings of apprehension. This will help him in getting thorough with the topic also,
Therefore, the correct answer for this question is (a)carefully prepare & practice frequently.
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