UX focuses on how the user (a)   while using the system.

Accessibility ensures that the application can be used by people with vision, motor, or (a)   limitations.

To apply a dark theme, the form’s background color is set using (a)   .

Looping through UI elements is done using For Each ctrl In Me. (a)   .

Setting buttons to FlatStyle. (a)   gives them a modern flat look.

Gradient backgrounds use the class (a)   GradientBrush.

A round button uses a custom (a)   assigned to its Region property.

Theme switching is controlled using a Boolean variable called (a)   .

Users can choose colors using the control named (a)   .

Input validation uses the (a)   control to show warning icons.

To clear previous error messages, the method used is (a)   .

Numeric validation uses the function Integer. (a)   .

Email validation is done using (a)   .IsMatch.

If validation fails, the keyword (a)   Sub stops further execution.

A form becomes more accessible by setting the correct (a)   order.

Tooltips are added using the method _________.SetToolTip.

High Contrast Mode often uses (a)   text on a black background.

Enlarged, bold controls improve visibility for users with (a)   vision.

Changing control fonts uses the (a)   class.

API stands for Application (a)   Interface.

The WebClient method used to GET data is Download (a)   .

JSON is converted into VB objects using JavaScript (a)   .

REST APIs commonly return data in (a)   format.

POST requests require Content-Type = "application/ (a)   ".

The API https://api.agify.io predicts a person's (a)   .

The testing API reqres.in simulates user _________ operations.

WebClient’s asynchronous GET uses the event DownloadString (a)   .

Asynchronous POST uses the event UploadString (a)   .

Asynchronous API calls prevent the UI from (a)   during a request.

Event-driven apps react to user actions such as Button (a)   .

Code that runs when the form opens is located in the Form. (a)   event.

Timers run repeatedly using the (a)   event.

API requests often require enabling TLS (a)   for security.

In POST requests, the body is formatted using a (a)   object.

To convert VB data into JSON, the method js. (a)   is used.

To convert JSON into VB, the method js. (a)   is used.

API responses stored as strings come from client.Download (a)   .

Output is often displayed in a multiline (a)   .

In the Weather API example, the temperature is taken from current_condition → temp (a)   .

Controls inside a form are accessed using Me. (a)   .

Labels’ text color is changed using the property (a)   .

Buttons’ background color is changed using the property (a)   .

For TextBox dark-mode styling, the background is set to a darker (a)   .

The form gradient background is drawn inside the Form. (a)   event.

To make a circular button, path.Add (a)   is used.

Real-time validation is triggered inside TextBox. (a)   events.

When all validation errors are clear, MessageBox shows “Registration (a)   !”.

A tooltip provides short helpful (a)   to the user.

High-contrast accessibility mode sets controls’ ForeColor to (a)   .