You are the IT administrator of a company with a Microsoft 365 subscription and Microsoft Defender Plan 2 licenses. During your summer holiday an email you were expecting did not arrive in your inbox. You suspect it has been put in quarantine. When you return to the office you open the quarantine page, but you cannot find the expected email. 
How long are spam, phishing and bulk email messages quarantined by anti-spam policies retained by default before they are deleted?

Answer options:

A.10
B.15
C.90
D.30

Correct Answer: D 
Spam, Phishing and Bulk messages quarantined by anti-spam policies will be retained for 30 days before being deleted. This is the default and maximum value.Option A is incorrect. Not the default value, but you can manually reduce the number of days to 10.
Option B is incorrect. Not the default value, but you can manually reduce the number of days to 15.
Option C is incorrect. Not the default value. Maximum retention period is 30 days.