Water's presence in many liquids around Earth suggests what about water's ubiquity?

• A. Water is commonly detectable in many liquids around Earth.
• B. Water cannot mix with most substances.
• C. Water is only in pure forms like rainwater.
• D. Water evaporates immediately in all liquids.

Answer: (A)

Water’s wide presence in liquids around Earth shows how abundant it is and how it acts as a common component in many environments. Water is a polar molecule, which makes it a very good solvent capable of dissolving a broad range of substances. Because of this, natural liquids like seawater, groundwater, plant sap, and even many everyday liquids contain water as part of their makeup, illustrating its ubiquity rather than confinement to pure forms.

This also explains why the other ideas don’t fit. Water can mix with and dissolve many substances, so it isn’t limited to pure forms. It isn’t restricted to rainwater alone, since it exists in countless mixtures in nature. And evaporation isn’t automatic in all liquids—whether water evaporates from a given liquid depends on temperature, pressure, and the properties of that liquid.