In summary, william sydney porter better known as o. henry was a fugitive who returned to the u. s. because of his wife’s terminal illness. how would i fix the comma splice in this sentence?

you can add one infront of who returned

the best practice

1. keep your workspace clean

2. wash your hands

3. seperate and clean chemicals and equipment

4.   use microfiber cleaning utensils

5. clean and sanitize all work surfaces

hope this !