The crops mentioned—olives, figs, grapes, and lemons—are typically grown in Mediterranean climates, which are characterized by hot, dry summers and mild, wet winters. The key similarity among the locations where these crops flourish is their association with a Mediterranean climate.
Given this, the option that best explains the significance of the similarity among these locations is:
Intensive agriculture is practiced in a Mediterranean climate.
This indicates that these crops are not only suited to this specific climate but are also cultivated intensively to maximize yield in the favorable conditions provided by the Mediterranean climate. Therefore, while the options provided may not directly include Mediterranean conditions, the most relevant statement concerning the crops listed would align with intensive agricultural practices in a climate conducive to their growth.