Which of the following traits was most important in enabling the first plants to move onto land?

The existence of being able to process photosynthesis. 

Photosynthesis is a functional and adaptive mechanism which enables plants to make and create their own food with the use of sunlight. Also, water and carbon dioxide, oxygen is then the by product of this process which is beneficial to other organisms especially heterotrophs. 

In my own word cell technology can  lead to advances in the understanding of diseases mechanism and transmission because diseases is very bad