Correct option is B
Option
(b) contains an error.
Explanation:
· The correct form is
"has been", not "has being".
· “
Being” is the present participle of “be” but is
not used after “has”.
· The present perfect continuous tense requires
has/have + been + verb-ing.
Correct sentence:
She has been trying to call her mother since morning.
Grammatical Rule Used:
Present Perfect Continuous Tense =
has/have + been + V1+ing
Used for actions that started in the past and are still continuing.
Example:
· I
have been studying since 6 AM.