NEET UG 2020 — Biodiversity and its Conservation

Which of the following regions of the globe exhibits the highest species diversity?

According to Alexander von Humboldt:

In the following, in each set, a conservation approach and an example of a method of conservation are given (a) In situ conservation-Biosphere Reserve (b) Ex situ conservation-Sacred groves (c) In situ conservation-Seed bank (d) Ex situ conservation-Cryopreservation Select the option with a correct match of approach and method:

According to Robert May, the global species diversity is about