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. (A) in addition to its possibilities for preventing and inhibiting (B) in addition to its possibilities to prevent or inhibit (C) besides the possibility that it prevents and inhibits (D) besides the possible preventing and inhibiting of (E) besides possibly preventing or inhibiting

E). Besides possibly preventing or inhibiting.

Explanation:

As per the question, option E most appropriately revises the underlined phrase as it is both syntactically and semantically appropriate. The other options are either grammatically inappropriate (parallelism error in options A, B, and C (because 'it is singular while 'forms' is plural' that creates a discrepancy) or lexical error (option D conveys an inadequate meaning due to wrong use of 'and' between the two participles). Therefore, option E only conveys the clear, concise, and grammatically appropriate meaning because it appropriately states that 'the health benefits of tea have become a subject to research; besides possible preventing or inhibiting some forms of cancer, ... stroke.'