올려주신 코드 대신 아래의 코드를 활용해보시겠어요?

<style>
#kboard-default-editor select#kboard_option_inquiry_type,
#kboard-default-editor select#kboard_option_inquiry_type02 { display: none; }
#kboard-default-editor #kboard_option_inquiry_type.active,
#kboard-default-editor #kboard_option_inquiry_type02.active { display: inline; }
</style>

<script>
function kboard_checkbox_click(obj, id){
	console.log(obj, id);
	if(jQuery(obj).prop('checked')){
		jQuery('#'+id).addClass('active');
	}
	else{
		jQuery('#'+id).removeClass('active');
	}
}
</script>

<div class="kboard-attr-row">
	<label class="attr-name" for="kboard_option_inquiry_type">욕실공사</label>
	<div class="attr-value">
		<input type="hidden" name="kboard_option_type[]" value="">
		<label>
			<input type="checkbox" name="kboard_option_type[]" value="거실욕실"<?php if(in_array('거실욕실', $content->option->type)):?> checked<?php endif?> onclick="kboard_checkbox_click(this, 'kboard_option_inquiry_type');">거실욕실
		</label>	
		<select id="kboard_option_inquiry_type" name="kboard_option_inquiry_type"<?php if(in_array('거실욕실', $content->option->type)):?> class="active"<?php endif?>>
			<option value="">선택하세요</option>
			<option value="샤워부스"<?php if($content->option->inquiry_type == '샤워부스'):?> selected<?php endif?>>샤워부스</option>
			<option value="파티션"<?php if($content->option->inquiry_type == '파티션'):?> selected<?php endif?>>파티션</option>
			<option value="욕조"<?php if($content->option->inquiry_type == '욕조'):?> selected<?php endif?>>욕조</option>
		</select>
	
		<label>
			<input type="checkbox" name="kboard_option_type[]" value="안방욕실"<?php if(in_array('안방욕실', $content->option->type)):?> checked<?php endif?> onclick="kboard_checkbox_click(this, 'kboard_option_inquiry_type02');">안방욕실
		</label>
		<select id="kboard_option_inquiry_type02" name="kboard_option_inquiry_type02"<?php if(in_array('안방욕실', $content->option->type)):?> class="active"<?php endif?>>
			<option value="">선택하세요</option>
			<option value="샤워부스"<?php if($content->option->inquiry_type02 == '샤워부스'):?> selected<?php endif?>>샤워부스</option>
			<option value="파티션"<?php if($content->option->inquiry_type02 == '파티션'):?> selected<?php endif?>>파티션</option>
			<option value="욕조"<?php if($content->option->inquiry_type02 == '욕조'):?> selected<?php endif?>>욕조</option>
			<option value="설치공간없음"<?php if($content->option->inquiry_type02 == '설치공간없음'):?> selected<?php endif?>>설치공간없음</option>
		</select>
	</div>
</div>

커뮤니티에서는 모든 코드를 일일이 만들어 드리긴 어렵습니다.

직접 코드를 작성하기 어려우시다면

프로젝트 의뢰에 상세 내용을 올려보세요.

https://www.cosmosfarm.com/project/

고맙습니다.