Answer: (A) Establishing alliances
Explanation:
Alliances is one of the type of business strategy which is used in for maintaining the relationship between the people, states and the group.
The main purpose of alliances is that it helps in balancing the power and also creating the separate business entity in an organization. It is also known as the type of agreement between the people that helps in binding all the joint venture in business.
According to the given question, the above given situation is an example of obtain the competitive advantage by establishing the alliances.
Therefore, Option (A) is correct answer.