Which of the following has the greatest influence on the culture of an organisation?

Top management has the greatest influence on organisational culture. A culture usually originates in the founders' vision and is kept alive by the actions of top managers, who set norms through what they say, reward and model, and through the selection and socialisation practices they approve. Technology and market conditions affect culture only indirectly, and rank-and-file employees mostly absorb and carry an existing culture rather than shape it.