I think the answer to that question is d and a
Reading books and writting.
The hypothesis that the RSA Animate video offers as to why we often avoid explicit language is that indirect language creates individual knowledge, while explicit language creates mutual knowledge that we cannot take back.
Uttering explicit language can be a determinant of a person’s first impression towards the speaker.
Yes it was justifiable
1. they needed food
2. they needed more cloth (clothing)
sorry this is all i got for you hope this is at least a little helpful :)