A. whenever Bafterward
Calthough
Dmeanwhile
he was no longer hungry james ate a large piece of cake

Although

Explanation:

The correct answer is "Although, he was no longer hungry, James ate a large piece of cake".

Although, is typically used to link two ideas that contrast each other. It shows one fact which then makes the other fact surprising. It surprising in this case that James still ate a big cake despite the fact that he wasn't hungry anymore.

the answer is subjective. i personally agree with the first answer for this question.

if one isn't strictly talking about objects then the correct answer would be 'my eyes' since according to this riddle i am asleep and in order to answer/open the door i need to open my eyes first of all.

however, if one is specifically looking for an object, then the first thing i would open would be the door

hope this !