- Growth means size / number / value / strength increases
- Cell division often causes growth / healing
- Hence, cell division causes growth in size

- Cell division causes growth in size
- Cell division produces more cells for multicellular organisms
- Hence, cell division causes growth in size by producing more cells for multicellular organisms

So, cell division causes growth in size by producing more cells for multicellular organisms
Question: Multicellular organisms grow in size by producing more
Context: - Growth means size / number / value / strength increases 
- Cell division produces more cells for multicellular organisms 
- Cell division often causes growth / healing