Which of the following sequence represent a correct order of soil particles arranged in terms of particle size from smaller to largest?

Soils are predominantly composed of particles of various sizes derived from the disintegration or decomposition of parent rock material.  

• Soil texture refers to the relative particle-size composition of the soil.
• The particle size composition of the soil is the percentage of the mineral matter by weight in each fraction.
• In a given sample of soil, there may be present different sized particles in various proportions.
• Depending on their size (in diameter) the International Society of Soil Science has given specific nomenclature to the various particle size classes which are as follows:

Hence, the sequence represents a correct order of soil particles arranged in terms of particle size from smaller to largest is Clay < Silt < Sand < Gravel.