This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to catch a duck
Put a small bowl of dog food outside.
Fill up a small bowl with wet or dry dog food and place it outside near where the duck typically stays. You can use dry food, or you can wet it a bit with water.

Available options:
+ Fresh grass grass works especially well since it is easy to spot because you won't disturb the duck during the winter months. This should also be used in conjunction with the wet food.
+ If the duck is injured, it's best to use wet dog food so the duck will get some water and avoid dehydration. You can also put out a bowl of water for an injured duck to get rehydrated.
+ The wet and dry foods that you put outside are determined by the speed of the duck. Wet food will get rid of the duck faster, so change to a wet food set out straight away.
+ Let the duck stand in the wet water so that the front bend of its tail stays in line with its body. The duck will sway from side to side as it rests.
The answer is:
If the duck is injured, it's best to use wet dog food so the duck will get some water and avoid dehydration. You can also put out a bowl of water for an injured duck to get rehydrated.