How can a man go eight days without sleep?

What does below rebus means ?

What is the next shape from answers A, B, C, and D figure?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

Can you start the fire using two pieces of wood?

What has a ring but no finger?

You can hear me, but you can't touch or see me.

What am I?

What is both possible and impossible at the same time?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?