Step 1: Understanding the graph of population growth.
The graph represents typical population growth, with different phases of growth. The 'lag phase' refers to the initial phase where the population is adjusting to the environment, and growth is slow. 'A' typically represents the exponential growth phase, where the population grows at a rapid rate.
Step 2: Conclusion.
The point 'A' in the graph represents the "exponential growth phase," where the population increases rapidly after overcoming the lag phase.