Our fingers have three bones while our thumb has only two?

Yes, that is true. It helps us grab things. These 2 phalanges help us maneuver our hands to grasp and hold things.

That is true. Our fingers have three bones while our thumb has only two.

This is because of our origins.

Our earliest known ancestor is the fish Rhipidistia (extinct for 230 million years)
It had in it's fin, 4 fingers with three bones in each finger, and a thumb with only two bones.

This has been the case in all hands of the first mammals, reptiles and amphibians, and humans.

The answer to this question is  c. pharmaceutical accumulation  reclaimed water refers to the water that being used again after it already  used for agricultural purposes.this type of water often contains pharmaceutical accumulation because of the chemical fertilizer that is used for the plants is absorbed into the water.