You are managing search results in a SharePoint farm.
You need to configure a query rule that fires for all queries.
In the Search service application, which option should you select? (To answer, select the appropriate option in
the answer area.)
Hot Area:
Answer: 
Explanation:
If you are creating this rule for a site collection, click Remove Condition if you want this rule to fire for every
query that users type inside any search box in the site collection.
Puccini (30.10.2015): If no condition is available, a text will be displayed:
“This rule fires on any query text.”