| LIST I (Operation of union) | LIST II (Law) | ||
| A. | A∪B=B∪A | I. | Associative Law |
| B. | (A∪B)∪C=A∪(B∪C) | II. | Commutative Law |
| C. | A∪A=A | III. | Law of Idempotent |
| D. | A∪Φ=A | IV. | Law of Identity |
Identify the part of speech for the underlined word: "She speaks \(\underline{fluently\ in\ three\ languages."}\)