It helps you give a reading for a specific location when asked
Hello Peppa Pig,
I'd say that the answer is B because you can observe how the perching birds make their nests.
Have a good day
If this is a true or false question, the answer would be true. The double effect would refer to a situation where a beneficial action can have harmful side effects. It would mean that it would be fine to do an act if there are 2 effects, one bad and one good.