The health benefits of tea have been the subject of much research; in addition to its possibilities for preventing and inhibiting some forms of cancer, the brewed leaves of Camellia sinensis may also play a role in reducing the risk of heart disease and stroke.
The health benefits of tea have been the subject of much research; in addition to its possibilities for preventing and inhibiting some forms of cancer, the brewed leaves of Camellia sinensis may also play a role in reducing the risk of heart disease and stroke.
in addition to its possibilities for preventing and inhibiting
in addition to its possibilities to prevent or inhibit
besides the possibility that it prevents and inhibits
For Q33, the subject of the sentence after ";" is "the leaves", so "its" in A, B and "it" in C cannot refer to "the leaves".
"the possible preventing and inhibiting of" in D is definitely not an idiomatic phrase. only left for E which is much better to use "besides possibly doing".