Frost heave is defined as ___________
(a) Rise of ground water surface
(b) Freezing of water in soil
(c) Increase in volume due to freezing
(d) None of the mentioned
This question was posed to me by my school principal while I was bunking the class.
This key question is from Frost Action topic in portion Soil Water Effective and Neutral Stresses of Geotechnical Engineering I