When professors meet with individual students during office hours, they often exhibit communication styles that vary widely based on the person they’re talking to. a study found that professors speaking with minority female students were much more likely to use shorter sentences with more instructions, and to ask questions that revealed an assumption of lack of academic skill. these professors were demonstrating:

These professors were demonstrating DISCRIMINATION.

Explanation: Discrimination is a distinct treatment of an individual to their disadvantage.

The professors speak to different individuals differently. This change in behaviour can be termed discrmination because discrmination involves treating a person based on class/status/race/gender. Such changes are termed discrimination.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.