In the image a last piece is missing. Identify the correct jigsaw puzzle piece that fits in the grey area.
But be careful sometimes the puzzle pieces look very similar.
Puzzle 1

Solution for puzzle 1
The piece D is the correct one.
Puzzle 2
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Solution for Puzzle 2
Piece C fits best in the grey area.
Puzzle 3
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Solution for Puzzle 3
B is the correct answer.