Final answer:
The compound C₁H₅OP includes four different elements, which are carbon, hydrogen, oxygen, and phosphorus.
Step-by-step explanation:
The compound with the formula C₁H₅OP contains four different elements: carbon (C), hydrogen (H), oxygen (O), and phosphorus (P). This compound is comprised of atoms from the elements mentioned, adhering to the principle that molecules of compounds contain two or more types of atoms chemically bonded together. In contrast to molecules of elements that contain only one type of atom, this compound clearly consists of more than one.