The Test Explorer panel in UiPath Studio shows information relevant to test automation, such as test cases, test results, and activity coverage1. You can use the Test Explorer toolbar to filter test results based on result state, and to run or debug test cases using various options1. According to the UiPath documentation12, the available actions in Test Explorer are:
Refresh: Refresh the information shown in the Test Results panel.
Clear execution results: Clear all execution results shown in the Test Explorer Panel.
Run All in View: Run tests that are currently in view through all filters.
Run All: Run all test cases and workflows.
Run Selected: Run only selected test cases and workflows.
Run Failed Test Cases: Run only failed test cases.
Debug Selected: Debug only selected test cases and workflows.
Debug Failed Test Cases: Debug only failed test cases.
Repeat Last Test Run: Run the latest test.
Passed Test Cases: Show only test cases that have passed.
Failed Test Cases: Show only test cases that have failed.
Not Executed Test Cases: Show only test cases that have not been executed.
Filter by Covered/Uncovered Activities: Choose whether to show in the Designer panel the activities that have been covered during the execution.
Filter by Test Cases/Workflows: Choose what to show in the Test Explorer panel.
Search Tests: Use the search function to look for test case names.
As you can see, there is no action called Run Passed Test Cases in Test Explorer, so this is the correct answer to the question.
References:
Studio - Test Explorer - UiPath Documentation Portal
Studio - Test Activities - UiPath Documentation Portal
Studio - Test Explorer - UiPath Documentation Portal

The behavior of the Type Into activity when executing the workflow is that the activity will remove a Single Line in Run mode and Multi Line in Debug mode. This is because the activity has the Empty field property set to NEmptyFieldMode.SingleLine, which means that the activity will delete the existing content in the field by sending Ctrl+A and Delete keystrokes before typing the text. However, the activity also has the Debug mode property set to NEmptyFieldMode.MultiLine, which means that the activity will delete the existing content in the field by sending Ctrl+A, Shift+Home, and Delete keystrokes before typing the text. The Debug mode property overrides the Empty field property when the workflow is executed in Debug mode. Therefore, the activity will use different keystrokes to empty the field depending on the mode of execution. References:
[Type Into], [Empty Field], [Debug Mode]

When the Split method is used on a String variable, the result is an array of substrings. However, accessing a specific element of this array (e.g., MyNumbers.Split("."c)(1)) returns a single substring, which is a String.

The Invoke Method activity is used to invoke a method of a class or an object. In this case, the developer wants to add items to a list of strings using the Invoke Method activity. The list is declared as follows:
Dim Colors As New List(Of String)
This means that the list is named Colors and it can store strings. The Invoke Method activity has the following properties:
TargetType: System.Collections.Generic.List`1[System.String]. This means that the target type is a generic list of strings.
TargetObject: Colors. This means that the target object is the list named Colors.
MethodName: Add. This means that the method name is Add, which is a method of the list class that adds an item to the end of the list.
Parameters: In, String, Yellow. This means that the parameter direction is In, which means that the value is passed to the method. The parameter type is String, which means that the value is a string. The parameter value is Yellow, which means that the value is the string "Yellow".
Based on the information shown in the exhibits, the outcome of the Invoke Method activity is that Colors will contain an item with the value "Yellow". This is because the Invoke Method activity will add "Yellow" to the list of strings declared as Colors.