我在指考範文看到一句
To sum up, food and art may be the best incentives to arouse a conversation and achieve notice in the local markets, that leads to my choice for activities.
為什麼這裡逗號後面可以用that ?
謝謝！

補述

那請問逗號後面不是不能用that嗎？ 那我這句用which可以嗎？