I have a knife and a flashlight. I need to eat by the end of day 6. I choose option 1.

Usually, a lot of people have an image of a cow as a gentle creature just grazing on grass. I'm sensing these cows might be more aggressive than most people think.

http://blogs.discovermagazine.com/inkfish/2016/02/02/how-not-to-get-killed-by-a-cow/

Besides, I'm also sensing an Oregon Trail type situation here where even if I was able to kill a cow, I would only be able to carry a few extra pounds of meat for eating later.