WAEC Geography 1991 (August) Question 17

Mass movement of weathered materials may be gradual or sudden depending on the I. gradient of the slope and gravitational force II. weight of the weathered debris III. supply of lubricating moisture by rainwater coupled with gravitational force IV. type of weathering which has taken place

1. A.I, II and III
2. B.I, II and IV
3. C.I and IV only
4. D.II and IV only
5. E.III and IV only