In 2010, concern about cost overruns and staying on schedule kept executives of BP, Halliburton, and Transocean from sharing information and concerns with each other. The result was a shared assumption of safety that ultimately resulted in the explosion of a BP oil rig and an unprecedented environmental disaster. The failure to express concerns and confront potential risk is an example of __________.

Group think is one of the type of psychological phenomenon in which the group of the people make the decisions, discussing the different types of factors for accomplishing the given tasks and project more efficiently.

The main purpose of the group think is that it producing the various types of decision making process and also reducing all the discussion conflicts between the people.

According to the given question, the failure for expressing the various types of potential risk and the concern is one of the example of the group think process.

Therefore, Group think is the correct answer.