Workability of concrete is directly proportional to a) aggregate cement ratio b) time of transit c) grading of the aggregate d) all of above

Workability is directly proportional to

A) grading of aggregate

B) w/c Ratio 

C) cement content 

D) water content 

E) Aggregate size (more for well graded rounded smooth aggregates)

F) Admixture

G) Air entrainment 

However Workability is inversely proportional to 

A) aggregate/cement ratio (i.e. mix proportion)

B) time of transit 

C) porosity 

D) temperature

E) specific surface area 

So answer to this question is (c)

Ideally it depends upon the water cement ratio.. Further Grading of aggregate  and transit time may affect the workability of concrete.

D) All of above , when water cement ration decrease workability decrease also time of transit also grading of aggregate

the workabiliy is depend on : all of above is answer d 

d is the answer , all of the above 

The answer is (d),that means all of above.

the answer that affect on workability is all of above