A factor which has the most significant influence on a liquid's surface tension is: D. The strength of the electric forces between its molecules.
Surface tension is a property of liquid such as water, which makes its surface to resist an external force due to the cohesive nature of the liquid's molecules.
Hence, the surface tension of a liquid is highly dependent on the electric (cohesive) forces of attraction existing between its molecules.
Additionally, the surface tension of a liquid is an inward force which tends to minimize its surface area rather than maximizing its surface area.
In conclusion, the strength of the electric (cohesive) forces of attraction between a liquid's molecules has the most significant influence on a liquid's surface tension.
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