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Grasslands support
high densities of tigers, which fight and
sometimes kill sloth bears; sloth bears
(50) also coexist with and have been killed
by tree-climbing leopards, and are often
confronted and chased by rhinoceroses
and elephants, which can topple trees.
Collectively these factors probably
(55) selected against tree-climbing as a
defensive strategy for sloth bear cubs.
Q10:
The author mentions rhinoceroses and elephants (lines 52-53) primarily in order to
- explain why sloth bears are not successful foragers in grassland habitats
- identify the predators that have had the most influence on the behavior of sloth bears
- suggest a possible reason that sloth bear cubs do not use tree-climbing as a defense
- provide examples of predators that were once widespread across the Indian subcontinent
- defend the assertion that sloth bears are under greater threat from dangerous animals than are other bear species
The answer is D, but why C is not correct? | 
