Step 1: Understanding the Concept:
This question asks for the antonym of the verb EQUIVOCATE. To equivocate means to use ambiguous or unclear language, especially with the intent to mislead or to avoid committing to a particular stance.
Step 2: Detailed Explanation:
We are looking for a phrase that means the opposite of speaking vaguely or evasively. The opposite would be to speak clearly, directly, and honestly.
Let's analyze the options:
\begin{itemize}
\item (A) communicate straightforwardly: This means to express oneself clearly and directly, without evasion. This is a perfect antonym for equivocate.
\item (B) articulate persuasively: One can be persuasive while still equivocating. This is not an opposite.
\item (C) instruct exhaustively: This relates to teaching, not the clarity or directness of speech in general.
\item (D) study painstakingly: This relates to learning, not communicating.
\item (E) reproach sternly: This means to scold, which is a different speech act altogether.
\end{itemize}
Step 3: Final Answer:
The best antonym for EQUIVOCATE is TO COMMUNICATE STRAIGHTFORWARDLY.