Final answer:
The most effective message opening is option (a), which directly specifies the action required from the recipient, making it clear and goal-oriented. The other options are less direct and may result in delays or a lack of responsiveness.
Step-by-step explanation:
The most effective email opening of the three provided is, "To provide the presenter with information, please answer some questions about your STAR nominee Andrea Alexander, who will be honored at the June banquet." This option is direct and immediately conveys the main purpose of the message by focusing on the action required from the recipient. It clearly tells the reader that the purpose of the email is to gather information for the presenter regarding the STAR nominee, setting the right expectations and potentially improving the response rate.
Option (b) and option (c) have a more passive tone and are less effective in terms of prompt action. They fail to specify the immediate action needed, which may lead to delays or non-responsiveness. An effective message opening should instantly engage the recipient by clarifying the email's intent and, if appropriate, include a statement of purpose or a call to action.