Final answer:
The scenario where late rainfall leads to both agricultural failure and transport difficulties due to flooding is true, as environmental conditions are critical for crop cultivation and heavy rains can disrupt emergency responses.
Step-by-step explanation:
Based on the historical accounts and environmental research, the scenario described where rain comes too late for successful agriculture leading to flooding and difficulties in food transportation is true. Environmental conditions such as rainfall are crucial to agricultural success. A late onset of rainfall, after a period of drought, can indeed be too late to benefit crops that have already failed to grow. Consequently, this excessive water can cause flooding, which not only damages remaining crops but also creates obstacles for the transport of emergency supplies and food, exacerbating a crisis situation.