Option (क) 'एकाकार और समरूप' is correct because in the line 'प्रभु जी तुम चंदन हम पानी, जाकी अंग-अंग बास समानी', the devotee compares themselves to water and the deity to sandalwood. When water is rubbed on sandalwood, it absorbs the fragrance completely and becomes one with it. This symbolizes the complete unity and oneness of the devotee with the deity, where they become identical in form and essence. Options (ख) and (घ) only describe physical properties, missing the spiritual union, while option (ग) represents a master-servant dynamic seen in 'तुम स्वामी हम दासा', not the merging shown here.