I believe what Achebe meant by the proverb <em>When mother-cow is chewing grass its young ones watch its mouth </em>is that children take after their parents.
The thing which Gramholm use to end her remembering Rosa Parks' speech was a salute.
<h3>What is a Speech?</h3>
This refers to the formal talk that is given to a group of people about a particular text
Hence, we can see that the action that Gramholm used to end her speech about remembering Rosa Parks was that she gave a salute and this was a resounding gesture.
Read more about Rosa Parks here:
brainly.com/question/2856680
#SPJ1
2 hours a day I think or sometimes an hour is enough