Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

The ability of matter to combine chemically with other substances is known as reactivity.
The ability of matter to combine chemically with other substances is known as?

Breast cancer is the most common type of cancer in adult females.
What is the most common type of cancer in adult females?

The purpose of the chromosomes in the nucleus of a cell is to store the genetic instructions needed to specify traits.

Which of the following best describes the purpose of the chromosomes in the nucleus of a cell?