(a) scientists has discovered a new group of ferociously giant apes strengthening a surprisingly simple vegetarian fare and exhibiting - Incorrect - Subject Verb error
(b) scientists have discovered a new group of ferociously giant apes strengthened by a surprising simple vegetarian fare and exhibiting - Incorrect - Meaning error. 'surprisingly' is required here.
(c) scientists have discovered a new group of ferocious giant apes that eat a surprisingly simple vegetarian fare and exhibit - Incorrect
...
(b) scientists have discovered a new group of ferociously giant apes strengthened by a surprising simple vegetarian fare and exhibiting - Incorrect - Meaning error. 'surprisingly' is required here.
(c) scientists have discovered a new group of ferocious giant apes that eat a surprisingly simple vegetarian fare and exhibit - Incorrect
...
