The correct answer is: D. into
The word “into” is used to indicate movement from one place to another, with the destination being inside the place of origin. In this case, the man is moving from outside the room to inside the room.
The other options are incorrect because they do not indicate movement from one place to another. The word “in” is used to indicate location, not movement. The word “to” is used to indicate movement towards a destination, but it does not specify whether the destination is inside or outside the place of origin. The word “inside” is used to indicate location, not movement.
Here are some examples of how the word “into” can be used in a sentence:
- He moved into the room.
- She put the book into the bag.
- The cat jumped into the tree.
- The water rushed into the house.