Read the sentence below:

both effectively changed the popular opinion about emotional issues for their countries and brought in a wave of change that was long overdue.

in this context, what does the word wave mean?

-a motion of the hand
-a floating movement in the air
-a swelling movement sweeping others in a shared direction
-a rolling or undulating movement passing along a surface

The correct answer is  C. swelling movement sweeping others in a shared direction

Explanation:

the answer is b

to me i think class room sitting education is better. i do online school and i have not learned a think haha. when i sit in the classroom i just sit there and kind of pay attention but still i get so far ahead in the class when im doing online i have nothing else better to do but play video games and i sit in school and learn and have friends and just actually learn. when i'm doing online i sit here listing to music and get on and and look up the answers i guess that is my fault for being a cheater. but to be honest i think sitting in the classroom is better.