ANS:B - inclined down stream

Dear All,

Functions of Groynes:

Training the river along the desired course by attracting, deflecting or repelling the flow in the river.

Creating a slack flow with the objective of silting up the area in the vicinity.
Protecting the river bank by keeping the flow away from It.
Contracting a wide river channel is usually for improvement of depth for navigation.

Types of Groynes based on the functions served:
Attracting Groyne's - Pointing D/S.
Deflecting Groyne's - Perpendicular to the bank.
Repelling Groyne's - Pointing U/S.
Sedimenting Groynes - For deposition of sediment.