To configure a decision element in a Salesforce Flow to check if a checkbox field is selected, the condition must evaluate if the field's boolean value is true. The correct operator for this comparison is "Equals". The value to compare against must also be a boolean true. In Flow Builder, this is represented by the global constant {!$GlobalConstant.True}. This configuration correctly creates a decision outcome that is followed only when the "High Value Customer" checkbox is checked.

B: This option incorrectly compares the boolean value of the checkbox field to a text string ("High Value Customer"), which will never evaluate to true.

C: The "contains" operator is used for collections or text fields, not for a single boolean (checkbox) field. Additionally, it checks for False, which is the opposite of the requirement.

D: The "contains" operator is not valid for a boolean data type. Comparing a boolean field to a text string is also logically incorrect.

1. Salesforce Help, Flow Element: Decision: "For each outcome, specify the condition requirements that a record or variable must meet... Each condition compares a resource to a value. You specify the resource, the operator, and the value." This document establishes the fundamental structure of a decision condition.

2. Salesforce Help, Flow Operators in Conditions: Under the "Boolean" Data Type section, the available operators are listed as "Equals" and "Is Null". This confirms that "Equals" is the correct operator and "Contains" is not applicable for a checkbox field.

3. Salesforce Help, Flow Global Variables: This document lists available global constants. It specifies {!$GlobalConstant.True} as the "Boolean value of true," confirming it as the correct value for the comparison in the decision element's condition.