Ineed to pass school so i can grow up and be a rapper. which phrase best describes speed?

a. rate of change in position due to have motion

b. total change in position as described by distance and direction

c. rate of change in velocity

d. rate of motion

Which plate boundary causes plates to collide forming mountain ranges, volcanoes, and island arcs? give an example of this type of plate boundary. 2. at which plate boundary do rifts and mid-oceans ridges form? give an example of this type of plate boundary. 3. at which plate boundary do plates slide past each other while moving in opposite directions? give an example of this type of boundary.