Conditional statements are used to perform different actions based on different conditions. Dart supports various types of conditional statements including if, else, else if, and the ternary operator.

void main() {
  int score = 85;

  // if statement
  if (score > 90) {
    print('Excellent');
  } 
  // else if statement
  else if (score > 75) {
    print('Good');
  } 
  // else statement
  else {
    print('Needs Improvement');
  }
}