A Standard Dictionary Can Be Useful in Some Instances for Defining

A standard dictionary can be useful in some instances for defining the terms of a proposition for argumentation. Which of the following is one of these uses?

A) You need to define the technical terms of the jargon used in field, such as "paradigm," to operationally define a policy term.
B) You need to define the relationship between the subject and predicate in a proposition of fact.
C) You need a list of synonyms for a vague or abstract value judgment term.
D) You need to clarify the use of the word "should" in a policy proposition.