Answer: b) they perceived Angela's professional position as masculine and socially threatening
Step-by-step explanation: The male professors are having the feeling of intimidation on society level as they are not comfortable with the fact that a female is appropriate for the job position that she has been promoted to .They had the mind-set of that such positions can be only occupied by the male .
Other options are incorrect because culture is not a factor in the situation rather gender is considered, physiology concept is not present and her position has not swayed them rather they think females are not the correct person for the position .Thus, the correct option is option (b).