Final answer:
To be convicted of conspiracy, there must be a plurality of agreement, indicating at least two parties mutually agreed to commit an unlawful act.
Step-by-step explanation:
To be convicted of conspiracy, there indeed must be a plurality of agreement. In legal terms, this means that there must be at least two or more parties who intentionally agree to commit an unlawful act. The essence of a conspiracy is the agreement or conspiracy to commit a crime, and not necessarily the commission of the crime itself. This agreement does not necessarily require explicit communication or a formal contract; it is sufficient if there is a mutual understanding to pursue the unlawful plan.