<em>Event 1 and Event 2 are correlated when </em><em>D. Event 1 has a connection to Event 2.</em>
Explanation:
<u>Event correlation</u> is a technique used to analyze and makind sense of a large number of events. This technique provides the possibility to apply and discover logical associations between individual events. Therefore, option D. Event 1 has a connection to Event 2 is correct because Event 1 and 2 can be considered associated events.
