Outbound messages are allowed with process builder.

Answer options:

A.True
B.False

Correct Answer: B 
Outbound messages are not allowed with process builder, they are only allowed with workflow rules. 
References: 

https://success.salesforce.com/ideaView?id=08730000000cFUaAAM

Correct Answer: B 
Outbound messages are not allowed with process builder, they are only allowed with workflow rules. 
References: 

https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/sforce_api_om_outboundmessaging_understanding.htm