Use of "Whether"

[Honore]

Dear Teacher,

Would you please help me on the following question? I cannot decide whether B or D is correct. I would choose B on the exam.
Thanks and regards.

He asked me whether I _____ the name of the Ottoman Emperor who followed Orhan.

A) know
B) knew
C) was knowing
D) would know

 

[Mzungu39]

B is correct.
You should follow the rules of reported speech.
The direct question here would be 'Do you know...'. When you change it to affirmative form and use one-tense-back shift (Present S. To Past S.) you get 'knew'.

 

[Mzungu39]

You're welcome.