Answer: Decentralized
Explanation: In a decentralized organisation, the seniors in the organisation transfers the authority and responsibility to their subordinates.
This is done by the seniors with the objective of effective running of operations within. The employees in such organisations usually remain more motivated than others.
In the given case, Infososft is encouraging their employees to take their own decisions while dealing with customers. Hence the transfer of authority for decision making is evident.
From the above we can conclude that the correct option is A.