PROPENSITY

Option (a) is the correct answer. ‘Propensity’ means ‘an inclination or natural tendency to behave in a particular way.’, the opposite for this is ‘disinclination’ which means ‘a reluctance or lack of enthusiasm.’ ‘Forecast’ means a calculation or estimate of future events, especially coming weather or a financial trend. ‘Stagnation’ means the state of not flowing or moving. ‘Restlessness’ means the inability to rest or relax as a result of anxiety or boredom.