Consider the following assertion:
The geological isolation and unique micro-climatic conditions of the southern Western Ghats have allowed extremely restricted, ancient floral lineages to survive as narrow endemics within localized riparian ecosystems, despite broader historical climatic shifts.

Which of the following serves as the basis or corroboration for the above assertion?

1.The recent discovery of a critically restricted population of the evergreen tree Humboldtia nairiana.

2.The biogeographical mapping of the Deccan Peninsula and Western Ghats conducted by Alexander von Humboldt.

3.The presence of identical fossilized angiosperm pollen in the sedimentary rocks of both the Aravalli Range and the Agasthyamala Hills.

Select the answer using the code given below: