Removal of waste and addition of fresh nutrients will most help increase stationary phase of a growth curve.
It is a graphical representation of the number of live cells in population of bacteria over a period of time.
In lag Phase growth curve, no cell division has been observed instead cellular activity are seen.
In exponential phase the cells undergo division by binary fission and
In stationary Phase the population growth experienced to decline due to depletion in nutrients availability and accumulation of waste products.
In death Phase, increase in waste products concentration decline in cells.
Thus, stationary phase is the correct answer.
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