[General] It's your prerogative

[suniljain]

It's your prerogative, you decide upon it.

Is the above sentence correct?

 

[MikeNewYork]

It will be when you delete "upon it" and change the comma to a semicolon.

 

[suniljain]

Why "upon" is not correct?

 

[MikeNewYork]

"Upon" does not work after decide.

 

[Matthew Wai]

http://www.oxfordlearnersdictionaries.com/definition/english/decide-on?q=decide+on
'Decide upon' means 'choose', which might not fit the OP's sentence.

 

[Rover_KE]

Why is "upon" not correct?

Please note the correct way to ask your question.

It does not work in this context.

'...upon it' is redundant.

 

[suniljain]

It does not work in this context.

'...upon it' is redundant.

Can I say that " upon" is not incorrect but redundant.

 

[MikeNewYork]

If it were "decide on it" or even "decide it", I would accept redundant. But "decide upon it" is just wrong in my opinion.

 

[Barb_D]

I agree with Mike. It's completely wrong.