Hi @amycarolyn
All that is needed is some simple PHP logic like so:
<?php if(get_field('repeater_field_name')): ?>
<ul>
<?php while(has_sub_field('repeater_field_name')): ?>
<?php if( get_sub_field('select') == 'Row One' ): ?>
<?php // do this... ?>
<?php else: ?>
<?php // do that... ?>
<?php endif; ?>
<?php endwhile; ?>
</ul>
<?php endif; ?>
Good luck!