Answer: Topic Sentence
Step-by-step explanation:
The Topic sentence contains the idea that the whole paragraph is centered on. It is in the topic sentence that the leader gets a grasp of what is going on and then reads the support sentences to find out an elaboration of this sentence. For this reason it is usually the first sentence though not always.
In the text, the sentence As a member of the crisis management team, you are required to attend our biannual crisis management workshops is a topic sentence because it introduces the Crisis Management team and then elaborates on it.