Correct option is A
The correct choice is option(a) ‘propensity’ to form a correct sentence. The word "propensity" means a natural inclination or tendency to behave in a particular way or to adopt a particular attitude. In the given sentence, it implies that successful business leaders have a natural inclination or tendency to take risks.
propensity – the fact that someone is likely to behave in some way; inclination
disinclination– a feeling of not doing something
dislike– to not like something or someone
dictate– to give orders with total authority
aversion– a feeling of not liking something to do