Conjugations of verb for sample JLPT question


One of the multiple choice questions in a book I was reading was as follows:

>   1. まどを_____.
>   2. はい、おねがいします。
>
> a) 開けましょうか  
>  b) 開けてもいいですか  
>  c) 開けなさい  
>  d) 開けてくれませんか
>
>

I selected b) as the answer, but the given correct choice was a).

I can see why a) would be a more natural fit than b), but could they both be
considered correct? My translation for the dialogue was essentially: 'Is it
okay if I close the window?' 'Yes, thanks', but would this seem
unnatural/wrong in the context?




Firstly 開ける means 'open' not 'close'. I'm sure that was just a slip, but I
wanted to make sure.

Option a) is 'Shall I open the window?'. You are offering a service to another
person so 'yes please' would be a natural response.

Option b) is 'Is it okay if I open the window?'. In this case you are seeking
permission to do something for your own benefit, so 'yes please' doesn't seem
like a good match to this question.

In summary a) seems like the only natural answer.




Firstly 開ける means 'open' not 'close'. I'm sure that was just a slip, but I
wanted to make sure.

Option a) is 'Shall I open the window?'. You are offering a service to another
person so 'yes please' would be a natural response.

Option b) is 'Is it okay if I open the window?'. In this case you are seeking
permission to do something for your own benefit, so 'yes please' doesn't seem
like a good match to this question.

In summary a) seems like the only natural answer.

