1. The problem asks to complete the text about DNA inheritance and cell growth in multicellular organisms. 2. Most multicellular organisms inherit half of their DNA from one parent and half from the other parent. This is because sexual reproduction combines genetic material from two parents. 3. The organism primarily grows by making new cells through cell division, specifically mitosis, which produces genetically identical daughter cells. 4. Therefore, the completed text is: Most multicellular organisms get **half** of their DNA from one parent and **half** from the other parent. A multicellular organism primarily grows by making **new** cells. This explains the genetic contribution and the growth process clearly and simply.