Parts C and E make a pair which denotes the subject of the sentence, so the pair comes first. E is followed by part B which begins with the noun 'meetings' which is qualified by the adjective 'hybrid' present in part E. Part B is followed by the pair AD which denotes the thing required for a better hybrid set up and part F is fixed. Therefore, the correct order of the parts is CEBADF.
Hence, the correct answer is option (c).
The rearranged sentence is: Another important factor in successful hybrid meetings is having a separate facilitator for remote attendees.
Note:
Qualifiers: A word or phrase that limits the meaning of another word or phrase or makes it less general. 'Adverbs' and 'adjectives' are qualifiers.