Source: templates/single-quiz/question-type-multiple-choice.php

<?php
/**
 * The Template for displaying Multiple Choice Questions.
 *
 * @author      Automattic
 * @package     Sensei
 * @category    Templates
 * @version     1.12.2
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Get the question data with the current quiz id
 * All data is loaded in this array to keep the template clean.
 */
$question_data = Sensei_Question::get_template_data( sensei_get_the_question_id(), get_the_ID() );

?>

<ul class="answers">

	<?php
	$count = 0;
	foreach ( $question_data['answer_options'] as $option ) {
		$count++;

		?>

		<li class="<?php echo esc_attr( $option['option_class'] ); ?>">
			<input type="<?php echo esc_attr( $option['type'] ); ?>" class="sensei-multiple-choice-answer-option-<?php echo esc_attr( $option['type'] ); ?>" id="<?php echo esc_attr( 'question_' . $question_data['ID'] . '-option-' . $count ); ?>" name="<?php echo esc_attr( 'sensei_question[' . $question_data['ID'] . ']' ); ?>[]" value="<?php echo esc_attr( $option['answer'] ); ?>" <?php echo esc_attr( $option['checked'] ); ?> <?php echo $question_data['quiz_is_completed'] || ! Sensei_Quiz::is_quiz_available() ? 'disabled' : ''; ?> />

			<label for="<?php echo esc_attr( 'question_' . $question_data['ID'] . '-option-' . $count ); ?>">
				<?php
				echo wp_kses(
					/**
					 * Filter user answer text.
					 *
					 * @hook sensei_answer_text
					 *
					 * @param {string} Answer text.
					 * @return {string} Filtered answer text.
					 */
					apply_filters( 'sensei_answer_text', $option['answer'] ),
					Sensei_Wp_Kses::get_allowed_html_formatting_tags(),
					array()
				);
				?>
			</label>
		</li>
	<?php } ?>

</ul>