Sorry about that; I think even I was confused on what I wanted to do…
The code below gave me what I wanted; I’m always open to tips on optimizing it further.
<?php if(get_field('choose_layout') == "1col")
{ ?>
<p><?php the_field('single_column'); ?></p>
<?php } elseif (get_field('choose_layout') == "2col")
{ ?>
<p><?php the_field('two_columns_left'); ?></p>
<p><?php the_field('two_columns_right'); ?></p>
<?php } elseif (get_field('choose_layout') == "3col")
{ ?>
<p><?php the_field('three_columns_left'); ?></p>
<p><?php the_field('three_columns_middle'); ?></p>
<p><?php the_field('three_columns_right'); ?></p>
<?php } ?>
