I think it was so brave of him to persist (堅持到底) in completing the whole program because it was clear to him that long-term consumption of McDonald's food could have far-reaching health effects/ impacts.
I think he was very dedicated, becasue he insisted in completing this program even though he knew the extended effects of consuming Mc Donald's fast food for a long period of time.
I think the drainage is very courageous, because the long-term water drainage to know McDonald's food are a long-term impact, but insist on the completion of the Drainage Department of the plan.
I find him courageous, because of his determination to complete the project despite his awareness
on the health effects of eating McDonalds on a long-term basis.
I found him very courageous because of his dedication to complete the campaign despite his full awareness of the long-term repercusions of McDonald's food on health.