Activity 18
Answer the following questions based on the proper dialogs in Activity 17.

Dialog 1

Mr. Nugraha: Please, don't use washing basin at the moment.

Delia: What's the matter, Dad ?

Mr. Nugraha: Its sink drain is clogged so wastewater cannot flow through the pipe.

Delia: Why don't you use caustic soda to accelerate the water flow?

Mr. Nugraha: That's a not good idea. It may cause the drain to melt.

Delia: What will you do then, Dad?

Mr. Nugraha: I will pour hot water on the washing basin. Hopefully it can make the water flow.

Delia: I agree with you. Let me take hot water for you.

Mr. Nugraha: Thanks, Delia.

Delia: Anytime, Dad.

What does Delia suggest his father overcome the problem?