Which sentence below is a simple sentence? a.
Geese mate for life unlike humans who, according to the divorce rate, seem to have trouble committing to just one person.
c.
I do not own a Porsche.
b.
Scientists are working on a cure for the common cold and, when they find one, think how remarkably it will change the profits of the Kleenex and drug industries.

It could be 1, 2, or 4, depending on the context.1.) they could have had a fight, and she is too humble to say anything further. she wants robert to say something first.2.) maybe he's staring at a computer playing tetris while she's wearing a *really* tight red dress. just sayin' xd3.) is unlikely given that it's only one sentence worth of context long. 4.) it's possible their relationship is more 'mutual hatred' and they tolerate one another.it could be 1, 2, or 4, as long as you can provide sufficient explanation why. remember this as you write!