Farah : I just heard that global warming is getting worse.

Risma : Yeah. Then, what should we do? Any idea?
Farah : Hmmm. I think we must stop the car factory producing any kinds of vehicle.
Risma : Umm. … your idea is illogical. It’s difficult to do it. I think we can start by something simple, like reducing the use of plastic or trying to plant tree in our surrounding.
Farah : That’s right.
a.That needs agreement
b.I can say no more for that matter
c.That is the best opinion I ever heard
d.I see what you mean but I must say that​

Farah : I just heard that global warming is getting worse.