What change should be made to the text below?
My sister has a rock collection, she wants to be a scientist when she grows up.
My sister has a rock collection because she wants. To be a scientist.
My sister has a rock collection. She wants to be a scientist. When she grows up.
My sister has a rock collection. She wants to be a scientist when she grows up.
My sister has a rock collection, she wants to be a scientist. When she grows up.