Answer: Bailment
Explanation:
Bailment is defined as legal action through which a personal possession or good is transferred or delivered towards the bailee without actually transferring the ownership for certain reason.The ownership of that particular personal property is not taken away.
According to the question,Grace and camera store has bailment-kind of relationship because Grace gets the developed films of the camera rolls through camera store which she has given them as personal possession. But camera store does not gain the ownership on camera rolls as it still belongs to Grace after development of photos.