The researchers who have provided guidance for identifying the potential, foot clayey sand and sand clay found in western US is ________

A)
Macveren
B)
Holtz and Gibbs
C)
Both (A) and (B)
D)
None of the above

Correct Answer :   Holtz and Gibbs


Explanation : In 1967, Holtz and Gibbs provide guidance for identifying the potential collapsible soil in arid and semi-arid regions.