Annual rings are found in plants growing in _____________.
Many distinct annual rings are formed in such regions, where climatic variations are sharp. More distinct annual rings are also formed in temperate plants. Such distinct annual rings are not formed in the tropical plants. Distinct annual rings are not formed in India excluding Himalayan regions.
Least distinct annual rings are formed in the seashore regions. More clear annual rings are formed in deciduous plants also, in temperate regions. In deserts, annual rings are less distinct.
So, the correct option is C.