What does the nuclear membrane do?

A nuclear membrane is a bilayer membrane that encloses a nucleus in eukaryotic cells and thus surrounds the genetic material of the cell. It consists of two phospholipid bilayers with many small holes. Those holes allow different material, such as proteins, RNA, ATP, water, to move in and out of the nucleus. Therefore its function is to regulate the flow of RNA and proteins since DNA, which carries the genetic information of the cell, cannot leave the nucleus.

The right option is; a. passing traits from one generation to the next  

Heredity is passing traits from one generation to the next.

Heredity is the passing on of physical and genetic traits from parents to their offspring. The offspring cells or organisms obtain the genetic traits from their parents through DNA (genetic material) and either through asexual reproduction or sexual reproduction. Common examples of heritable traits that can be transmitted from parents to their offspring include eye color, hair color and skin color.