HarshgmatThis is a very good question to learn from and will clear most of your concepts on the tenses.Despite the success of the bone marrow transplant, the patient was advised to take immuno-suppressive drugs, drugs that will inhibit the activity of the immune system, because she developed a rare case of graft-versus-host disease post the transplant.
A. Despite the success of the bone marrow transplant, the patient
was advised to take immuno-suppressive drugs, drugs that will inhibit the activity of the immune system, because
she developed a rare case of graft-versus-host disease post the transplant.
She developed disease first and drugs were advised later. I mean these two events are not in same time sequence. So for the later we use simple past and for the former "Past Perfect".B. Even though the bone marrow transplant
was successful, the patient
was advised to take immuno-suppressive drugs, drugs that inhibit the activity of the immune system, because
she had developed a rare case of graft-versus-host disease post the transplant.
The bone marrow transplant happened first and after that it was found that she developed a disease.
The former should be "Past Perfect". Hence eliminating B.C. Even though the bone marrow transplant
had been successful, the patient
was advised to take immuno-suppressive drugs, drugs that inhibit the activity of the immune system, as
she had developed a rare case of graft-versus-host disease post the transplant.
BINGO!!! All events captured as per our tense requirement. D. Despite the success of the bone marrow transplant, the patient
was advised to take immuno-suppressive drugs, drugs inhibit the activity of the immune system, as
she has developed a rare case of graft-versus-host disease post the transplant.
Read my reasoning mentioned in option A. Same error.E. Even though the
patient’s bone marrow transplant had been successful,
she was advised to take immuno-suppressive drugs, drugs that can inhibit the activity of the immune system, as she had developed a rare case of graft-versus-host disease post the transplant.
Ohh Man!! Pronoun error
She:-
referring to patient’s bone marrow. Incorrect.