1. what does it mean that it is self-evident?

In epistemology (theory of knowledge), a self-evident proposition is a proposition that is known to be true by understanding its meaning without proof, and/or by ordinary human reason. ... For most others, one's belief that oneself is conscious is offered as an example of self-evidence.

Explanation:

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it means like you don't need help or a explanation. you already know what to do.

Explanation:

Example - if the teacher assigns a portfolio for the whole class. then she demonstrates what to do, but you ignore it and do your work because you already know what to

"girls"

explanation:

a subject of a sentence is a noun or pronoun that shows who/what is performing the action (or verb) of the sentence.

in this case, the sentence states that the girls see. the girls are the ones who are performing the action, so they are the subject.

hope this !