Meaning of 'she started glaring'?

[Bashar]

English Grammar Tests, Elementary Level

ESL/EFL Test #60 "Chit Chat: In the theatre", question 9

Alice: He was really good in that. Oh look, he's suddenly stopped and started ..........

(a) glaring
(b) glazing
(c) glancing
(d) glossing

English Grammar Tests, Elementary Level

ESL/EFL Test #60 "Chit Chat: In the theatre", answer 9

Alice: He was really good in that. Oh look, he's suddenly stopped and started glaring.

Correct answer: (a) glaring

Your answer was: incorrect
Alice: He was really good in that. Oh look, he's suddenly stopped and started glazing.
_________________________

what does started glaring mean

Bashar

[Pamela]

It means to look attentively without taking the eyes away from ...

[lisa_mard]

what the different among the 4 choices??