Find and explain about the calculating devices used in history. ​

The earliest known calculating device is probably the abacus. It dates back at least to 1100 bce and is still in use today, particularly in Asia. Now, as then, it typically consists of a rectangular frame with thin parallel rods strung with beads.

i believe the answer would be b. within an intersection or on a crosswalk. hope this ! : )

answer; always; never;