Step 1: Understanding the term.
Totipotency is the ability of a single cell to divide and produce all differentiated cells of an organism. Step 2: Example.
A zygote or plant somatic cell can regenerate into a complete organism under suitable conditions. Step 3: Elimination of other options.
Polymorphism refers to multiple forms.
Autophagy and heterophagy are related to digestion processes. Step 4: Conclusion.
Thus, the correct term is totipotency.