Answer: Sociocultural component
Explanation: In simple words, sociocultural component refers to those factors that characterizes a society. It refers to the perception of the individuals living in a society about their lifestyle , choice, values and believes etc.
In the given case, the company has been experiencing drop due to the change in perception of the society towards the concept of marriage. These factors are constituents of external environment and could not be controlled by the organisation.
Hence from the above we can conclude that the correct answer is socio-cultural component.