Which of the following is a trick the dwarf plays on Gulliver?

burying Gulliver in a hole in the garden

covering Gulliver with a napkin

dropping Gulliver into a bowl of cream

leaving Gulliver on top of a table

The correct answer for this would be the third option. The trick that the dwarf plays on Gulliver is dropping Gulliver into a bowl of cream. This was because the dwarf became jealous. Gulliver was rescued but he suffered suffocation due to the cream. Hope this is the answer that you are looking for.