Which of the following is a limitation on congressional power? a. Granting patents and copyrights b. Setting and collecting federal taxes c. Regulating interstate trade d. Taxing interstate trade please select the best answer from the choices provided.

The ancestors of horses possessed feet with five digits. over time, with the development of grasslands, the digits fused and formed hooves. what evolutionary advantage did this transformation serve? a. it allowed them to climb rocky surfaces with ease. b. it allowed them to graze better. c. it enabled them to run faster from predators. d. it let them see clearly through the grasslands. e. it made them taller.