Even though you didn't give us the fragment with the comma slice, it isn't really necessary here as we can answer just based on these 4 options here. All options apart from the second one are correct - only the second option doesn't fix the mistake of the comma splice, whereas the other options do but connecting the sentences properly.
If you were to write an essay on dishonesty then think about if you were to lie to your parents or to your friends, how to guilt inside you would burn because it makes you feel so bad.
Answer:
To emphasize the word for shoppers
Explanation:
Sale is in bold, not to take up space, but to bring attention to the word. If you are shopping and see something you like, and it says sale on it you would want to buy it. If it says sale in small letters you might not see it.
