Answer:
d. corporation
Explanation:
lumber companies chopped down trees and processed them into planks
Chinese immigrants might work in the mines but they didn't operate them
Trusts: a trust is a three-party fiduciary relationship in which the first party, the trustor or settlor, transfers ("settles") a property (often but not necessarily a sum of money) upon the second party (the trustee) for the benefit of the third party, the beneficiary.[1]
