<em><u>Answer:</u></em>
b) The comma attempts to join two independent clauses.
<em><u>Explanation:</u></em>
When two ideas come together and either one of them can stand by itself as its own, independent sentence, then the use of the comma is correct:
Comma + a conjunction (and, but, for, nor, yet, or, so)
I am going to give you a topic and an example of paragraph, the idea is that you write the rest of the text.
A good topic could be: A healthy life
<u>You can eat what you want,</u> but it is important to include vegetables and fruits in your menu in order to have energy and balance in the body. A good example of breakfast could be a bowl with bananas and grapes and an orange juice glass, in this way, you start the day with the best nutrients of the nature.
*the underlined sentence is a model of subordination
I dont like your spelling but its ok we all have days like that :)