Correct Answer : All of the above
Explanation : * for production of accurate maps of wide areas* for developing the science of geodesy* making use of most accurate instruments and methods of observation* for determination of accurate positions on the earth's surface of system of control points
Correct Answer : Option (B) : 206.75 m
Correct Answer : Option (B) : north-west quadrant
Correct Answer : Option (C) : Both (A) and (B)