Several studies have examined the effect of selected personality variables on the decision making process.

d-------------------------------------------------------

I choose option    D

Thanks

I agree with all who answered d

d. all of the above...........................

d. >>>>>>>>>>>>> all of the above.  

d)............................................

right answer is d- all of the above,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

My answer is same as the other experts which is choice (D)

Answer will option d) >>>>>>>>>>>>>>>>>>>>>>>>>>

>>>>>>>> d. all of the above.