I think D maybe I know it does limit the subject but u don't need to have an opinion
Answer:
In my opinion, capital punishment is much more humane. When you sentence someone to life in prison, that is far worse than ending their suffering with a quick execution.
That person is forced to live the rest of their life in a tiny, uncomfortable prison cell. Everyday they repeat the same tasks over and over. It is tourture to whoever is sentenced to it, but on the other hand, if they get the electric chair, it's over like that. Much faster, less suffering.
Serious but not dark. show that you are trying hard to get your point across but not to hard. also, dont be so serious that you creep them out
Many scientists -- complete subject
scientists -- simple subject
The first one is C and the second is D