Final answer:
LNAPLs are contaminants associated with gas station leaks, have a specific gravity of less than 1, and are generally less soluble than 25g/m3, making all of the provided answers correct.
Step-by-step explanation:
LNAPLs (Light Non-Aqueous Phase Liquids) are typically associated with gas station leaks. They are compounds that have a specific gravity (S.G.) of less than 1, which implies that they are lighter than water and can float on water surfaces. LNAPLs are also generally less soluble than 25g/m3, making them persistent contaminants when they enter the environment. Therefore, the correct answer to the question is (d) all of the answers.