Which sentence below uses commas correctly? I thought that twelve people had signed up but I could be wrong.
I thought, that twelve people had signed up, but I could be wrong.
None of these sentences are correctly punctuated.
I thought that twelve people had signed up, but I could be wrong.

I guess the answer is

3rd one which is None of these sentences are correctly punctuated ...

Let me know if it's incorrect :-)

kenny´s more than 25 years of relevant public service. in the army for two decades, as official representative for four years, and now for the department of state, as ambassador. this career clearly demonstrates great capacities in the public sector.

which sentence refers to a dynamic character?

b.

a man learns empathy after working with those he formerly judged.

hope this answers your question!