Answer: First option is correct.
Step-by-step explanation:
Since we have given that
5d^2+4d-3-(2d^2-3d+4)
We need to find the correct difference.
Collect the like terms together.
5d^2+4d-3-(2d^2-3d+4)\\\\=5d^2+4d-3-2d^2+3d-4\\\\=5d^2-2d^2+4d+3d-3-4\\\\=3d^2+7d-7
Hence, First option is correct
