Final answer:
Most of Kenya's flower production is concentrated around Nairobi due to the city's economic significance and the fertile volcanic soils in the rift valleys which are ideal for agriculture.
Step-by-step explanation:
According to Ana Zepeda, most of the flower production in Kenya is located in the region surrounding Nairobi, which is the capital city. Nairobi serves as an economic hub for the East African region, and its growth has been significant as it attracts people from the rural areas and serves as a base for international business expansion. The fertile volcanic soils found in the rift valleys around Nairobi are particularly conducive for agricultural production, including floriculture, which has helped Kenya's flower industry to thrive.