Correct option is A
Option (a) contains an error.
· The tense
“will have been being” is
grammatically incorrect and awkward, especially with a
stative verb like “disheartened.”
· Such complex continuous passive structures are rarely used and are considered
ungrammatical in modern English.
· The correct structure would be
“He will have been disheartened…”
Correct sentence: He will have been disheartened by the telephone opinion poll published yesterday.
Grammatical rule used:
Avoid using
“being” with perfect continuous passive forms. Passive voice typically does not adopt this kind of
perfect progressive passive construction.
Example:
· Incorrect: He will have been being informed.
· Correct: He will have been informed.