Answer: a) Limited Liability Partnership (LLP)
b) Limited Liability Company (LLC)
c) General Partnership
d) Sole Proprietorship
Explanation: Limited Liability Partnership (LLP) - A type of entity that must have one general partner and at least one limited partner.
Limited Liability Company (LLC)- A type of entity in which owners are "members".
General Partnership - A type of entity in which all owners are jointly and severally liable for the entity's debts.
Sole Proprietorship - A type of entity in which there can be only one owner.