1$redux_demo = get_option( 'redux_demo' );
2
3if ( ! empty ( $redux_demo[ 10 ] ) and 1 === $redux_demo[ 10 ] )
4{
5    print '<h1>Text</h1>';
6}
7

1 <?php 
2    if(get_option('redux_demo[10]') === 1) { ?>
3
4      <h1>Text</h1>  
5
6    <?php 
7    }?>

1<?php
2global $redux_demo;
3if( $redux_demo['10'] === 1 ) { ?>
4    <h1>Text</h1>
5<?php } ?>
6

1    <?php 
2    if(get_option('redux_demo[10]')) { ?>  
3
4      <h1>Text</h1>  
5
6    <?php 
7    }?>
8