Explanation:

- The sentence refers to things being packed in a different box during a move. Such practice implies careful handling and requires items to be breakable or easily damaged.

- Option 1: crude - This means rough or unrefined. It does not suit the context as it doesn't relate to something fragile.

- Option 2: durable - This describes something that is long-lasting or resistant to damage. It is the opposite of delicate.

- Option 3: coarse - This refers to a rough texture, unsuitable in the context of delicacy.

- Option 4: fragile - This perfectly fits as a synonym for delicate, meaning easily broken or damaged.

- Your choice: option 4- fragile is correct.