The correct option is- 'A.' Key Points In the sentence, there is an error in the first segment of the sentence. To make the sentence correct, replace 'in which you can' with the preposition 'to.' Thus option 1 is the correct answer. The correct sentence is: The best way to open the bottle is by putting it into hot water first. Additional Information Let's understand the use of in and into: We use in to talk about where something is in relation to a larger area around it. Example: She’s in the garden. We use into to talk about the movement of something, usually with a verb that expresses movement. Example: Helen came into the room.