A construction schedule is prepared after collecting..?

All of them are very important.

My opinion is that the right answer is:

E. all the above

E. all the above.

I agree with colleagues

I agree with the logic

thanks for the invitation

My choice is:

E. all the above.

The answer is :

E : all the above 

Thanks for invitation

Correct and sure answer is 

E. all the above.

Thanks

It is (All of the above) "E"

Option E is very valid answer.

All of the above

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thanks for invition ,,,,,,,,,, my choice is option E

E: Above all

These are all the inputs for estimation of schedule duration, budget and their dependency.