Which of these makes the best time for a daily study period

early in the morning becoz your brain works best at that time

hi,   i believe the outlines that were supposed to be showing at the sentences, are not. could you highlight them somehow?

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 !