Surveying
The sun's declination remains north between

June 21 to September 21
September 21 to December 21
Both (A) and (B) of above
March 21 to June 21

ANSWER DOWNLOAD EXAMIANS APP

Surveying
The difference between a level line and a horizontal line is that

both are same
horizontal line is normal to plumb line while level line may not be normal to the plumb line
level line is normal to plumb line while horizontal line may not be normal to plumb line at the tangent point to level line
level line is a curved line while hori-zontal line is a straight line

ANSWER DOWNLOAD EXAMIANS APP