Answer: A) demonstrating role-taking.
Explanation:
Role taking is defined as approach in which others point-of-view is understood and perceived in a particular situation .It makes people perceive about particular concept to solve any problem or issue,realizing a topic etc.
According to the question,person is demonstrating role taking as he is perceiving and understanding that boss is angry at staff and work and thus, he wouldn't be in a good mood for taking about promotion.
Other options are incorrect because person is not demonstrating generalized other, significant other or Mead"s theory"s preparatory level.Thus, the correct option is option(A).