Which solution should capture the new subscribers?

Northern Trail Outfitters wants to implement a Welcome email. New subscribers signing up on their website should receive the email promptly. They are utilizing Marketing Cloud Connect to connect Sales Cloud and Marketing Cloud.

Which solution should capture the new subscribers?
A . Smart Capture form on website
B. Salesforce Triggered Sends
C. File import to data extension
D. Batch file dropped to SFTP

Answer: B

Explanation:

To send a welcome email to contacts when a contact record is added as a campaign member to a ‘Loyalty Member’ campaign in Sales Cloud, Northern Trail Outfitters should use Salesforce Triggered Sends. Salesforce Triggered Sends are emails that are sent from Marketing Cloud in response to events or changes in Sales Cloud objects, such as contacts or campaign members. Salesforce Triggered Sends allow marketers to send timely and relevant emails based on Sales Cloud data and actions.

References: https://help.salesforce.com/s/articleView?id=sf.mc_co_salesforce_triggered_sends.htm&type=5