An air conditioner uses a compressor to raise the temperature and pressure of

An air conditioner uses a compressor to raise the temperature and pressure of refrigerant.

A refrigerant is a substance or mixture, usually a fluid, used in a heat pump and refrigeration cycle. In almost all cycles, it undertakes transformation of phases from a liquid to a gas and vice versa.

b. latent learning (the word "latent" itself means something that exists but isn't obvious, only under certain conditions! )

1 a

2 b

3 b

4 d

5 d

6 d

explanation: