Which sentence shows correct comma usage?
a) "oh no" he grumbled impatiently under his breath "now, i have to start all over."
b) "oh no" he grumbled impatiently under his breath "now i have to start, all over."
c) "oh no," he grumbled impatiently under his breath, "now i have to start all over."
d) "oh no," he grumbled, impatiently under his breath, "now i have to start all over."

C) "Oh no," he grumbled impatiently under his breath, "Now I have to start all over."

Explanation:

There are several instances where using a comma brings clarity and cohesiveness to your text. For example, a comma should be used when joining two independent clauses with a conjunction:

We could not make it in time, so we did not go.

A comma is also useful after an introductory phrase:

Forced to eat on her own, she decided to at least watch TV.

Commas should also be used when introducing direct quotes, such as in this example.

no,

explanation:

because they are likely to use their corrupted thought process to get what they want. not what is better for the another reason they shouldn't is since they abused their rights as a us citizen they should have certain rights stripped away from them as punishment, such as the right to vote. due to the lack of proper behavior exemplified   from their actions , it would be hard for people to trust them because of their criminal record.   either directly (in the case of a referendum or ballot initiative) or indirectly (by choosing lawmakers and law enforcers). in fact, we do have certain minimum, objective standards of responsibility and commitment to our laws that we require people to meet before they are given a role in the solemn enterprise of self-government. people who have committed serious crimes against their fellow citizens don’t meet those standards. and those crimes can include such “non-violent felonies” as, say, treason and espionage, or voter fraud and public corruption, white-collar crime and felonies merely “concerning drugs” — like trafficking in fentanyl-laced heroin and selling it to minors, for example. if you’re not willing to follow the law, then you should not have a role in making the law for everyone else.