What is the main goal of this email?
原文：We want to ensure the event reflects everyone's preferences. We're reaching out to gather your input on several key aspects of the evening.
解析：这封邮件的目的是收集大家对年终庆典的偏好与意见。
A 宣布升职、B 要求捐款、D 通知公司政策变更，均与原文不符。