DNA can be obtained from a person in these ways. D mouth swab and blood sample mouth swab and urine sample urine sample and blood sample

## Step 1<br />The question is asking about the ways in which DNA can be obtained from a person. DNA, or deoxyribonucleic acid, is the genetic material that carries the instructions for the development and functioning of all living organisms. It is found in every cell of the body.<br /><br />## Step 2<br />The options provided are:<br />- mouth swab and blood sample<br />- mouth swab and urine sample<br />- urine sample and blood sample<br /><br />## Step 3<br />DNA can be collected from various body parts, including the mouth and blood. A mouth swab is a common method of collecting DNA, as it is non-invasive and can be done at home. Blood samples are also a common source of DNA, as they contain white blood cells, which carry DNA.<br /><br />## Step 4<br />Urine samples, on the other hand, are not typically used to collect DNA. This is because urine is mostly water and does not contain cells that carry DNA.