A 'UTM' firewall combines several security features, including:Group of answer choicesAntivirus, anti-spyware, spam filtering, intrusion prevention, and content filteringWeb hosting servicesPhysical network security measuresHigh-speed data transfer

A 'UTM' (Unified Threat Management) firewall combines several security features. These include:

1. Antivirus: This feature scans for and removes malicious software that could harm the system.

2. Anti-spyware: This feature prevents spyware, a type of malware that is designed to spy on the user's activities, from infiltrating the system.

3. Spam filtering: This feature filters out unwanted emails, commonly known as spam, from the user's inbox.

4. Intrusion prevention: This feature monitors the network for any signs of possible incidents, violations, or imminent threats, and reports them to the system administrator.

5. Content filtering: This feature controls the information that is delivered over the web by blocking access to certain sites, pages, or other resources.

So, the correct answer is "Antivirus, anti-spyware, spam filtering, intrusion prevention, and content filtering".