determine

determine /dɪˈtɚmən/ verb
determines; determined; determining
determine
/dɪˈtɚmən/
verb
determines; determined; determining
Britannica Dictionary definition of DETERMINE
[+ object]
1 
a  : to officially decide (something) especially because of evidence or facts : to establish (something) exactly or with authority
b  : to be the cause of or reason for (something)
◊ A determining factor is a reason to make a particular choice or decision.
2 
: to learn or find out (something) by getting information
3 
formal : to make a decision : decide