Option 1: immobile -> suggests physical inability to move, not unwillingness.
Option 2: lethargic -> means sluggish and lacking energy/enthusiasm, perfectly describing someone too lazy to perform simple tasks.
Option 3: resolute -> means determined and firm, which contradicts the behavior described.
Option 4: alert -> means watchful and attentive, the opposite of being too lazy to move.
Hence, Option 2: lethargic -> "Lethargic" captures the extreme sluggishness and lack of motivation that causes someone to hate getting up even for a simple task like opening the door. It describes a state of drowsiness, apathy, and unwillingness to exert energy -> correct