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To make the carousel indicator buttons react to mouse-clicks, the buttons need to be programmed to trigger a function or method when clicked. The function or method should change the active slide to the slide that corresponds to the clicked button.

Here is an example of how this can be done using jQuery:

1. Add a click event listener to the indicator buttons:

$('.carousel-indicators li').click(function() {
  // code to handle the click event goes here
});

1. Get the index of the clicked button:

var index = $(this).index();

1. Find the corresponding slide and make it active:

$('.carousel-item').eq(index).addClass('active');

1. Remove the active class from the previously active slide:

$('.carousel-item.active').removeClass('active');

1. Update the active button to indicate the new active slide:

$('.carousel-indicators li.active').removeClass('active');
$(this).addClass('active');

Putting it all together, the complete code for handling the click event on carousel indicator buttons would look like this:

$('.carousel-indicators li').click(function() {
  var index = $(this).index();
  $('.carousel-item').eq(index).addClass('active');
  $('.carousel-item.active').removeClass('active');
  $('.carousel-indicators li.active').removeClass('active');
  $(this).addClass('active');
});