HOTSPOT
You are planning the deployment of a SharePoint Server 2013 server farm.
You gather requirements from the IT managers of three departments.
The human resources department requires one site collection that meets the following requirements:
Is accessible from the URL http://hr.contoso.com.
Can store 10 GB of documents.The sales department requires five site collections that meet the following requirements:
The URL for all of the site collections will be located under http://intranet.contoso.com.
The site collections must only be accessible to users in the sales department.
The communications department requires one site collection that meets the following requirements:
The URL for the site collection will be located under http://intranet.contoso.com.
The site collection will host many Microsoft PowerPoint presentations. The presentations must
be rendered in a web browser if a user does not have PowerPoint installed.
Select Yes if the statement can be shown to be true based on the available information; otherwise select
No.
Answer: 
Do not agree. Central Administration also counts as an web application.
“… to host all of the site collections”. I don’t think they count Central Administration or any other web application that might already exist, but only the one(s) that host the site collections described in the case.
But as always it’s not very clear