The Lockean Proviso suggests that a person can come to acquire property in the State of Nature by mixing her labor with it only under which of the following conditions?
a. If she has not borrowed anyone else's tools to complete the labor
b. If she has left enough of the resource for others to enjoy.
c. If her labor was freely undertaken and uncoerced.
d. If she paid a fair price for the object.
e. All of these conditions must be met.