You have a SharePoint Server 2013 Service Pack 1 (SP1) server farm. The farm contains a
site collection named Collection1.
You need to ensure that you receive an email message if the resource usage of the
sandboxed solutions in Collection1 exceeds 100 points during one day.
What should you do?

A.
From Central Administration, edit the Site Lock Information.

B.
From Windows PowerShell, run the Set-SPUsageApplication cmdlet.

C.
From Central Administration, edit the Site Quota Infromation.

D.
From Windows PowerShell, run the Set-ExecutionPolicy cmdlet.

Explanation:
Change the storage limits for a site collection
Use these procedures to change the storage limits for a site collection.
To change the storage limits for a site collection by using Central Administration
Verify that you have the following administrative credentials:
You must be a member of the Farm Administrators group.
On the Central Administration home page, click Application Management.
On the Application Management page, in the Site Collections section, click Configure quotas and locks.
On the Site Collection and Quota Locks page, ensurethat the correct site collection is displayed. If you want to
change the site collection, in the Site Collection section, expand the Site Collection list, and then click Change
Site Collection. Use the Select Site Collection page to select a site collection.
If the site collection currently uses a quota template, do the following to specify an individual quota:
On the Site Collection Quotas and Locks page, in the Site Quota Information section, expand the Current quota
template list, and then select Individual Quota.
Leave the Limit site storage to a maximum of check box selected, and then type the new maximum value in
megabytes.
If you want to send site storage notification e-mail messages to the site collection administrator, select the
Send warning e-mail when site storage reaches checkbox, and then type the value in megabytes.
If you want to limit the maximum resource usage points per day for sandboxed solutions, type the new limit in
the Limit maximum usage per day to box. The defaultis 300 points.
If you want an e-mail message to be sent to the site collection administrator when the usage per day threshold
is reached, select the Send warning e-mail when usage per day reaches check box, and then type the
threshold, in points, in the box. The default is 100 points.
Click OK.
http://technet.microsoft.com/en-us/library/cc263480.aspx