Salesforce Exam CRT-550 Topic 1 Question 22 Discussion

A pharmaceutical company is hosting a monthly event and will be sending an invitation to new local contacts. The customer would like to automatically update a data extension to determine who will be attending.

*The data extension will hold each contact's response as well as the time stamp of the click.

*The contact will receive an email two days after the click event.

*Both emails should be sent via Journey Builder.

What is the optimal solution to record the click activity prior to sending the second email?