A:It will become longer by taking in nutrients.
Growth is a characteristics of every living thing and is portrayed by an increase in size (height and weight) of such organism. This question depicts an image of a unicellular organism called EUGLENA.
Like every other living organism, for Euglena to grow, it must take in nutrients necessary for its growth. Euglena does this by performing photosynthesis or by absorbing it from their immediate environment. As it grows, it takes in nutrients and uses it for growth, which is evident by its increase in size i.e. gets larger.