Does anyone do parkour here

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

All of the following physical reactions occur when our fight-or-flight response is triggered  except  a. dilating pupilsb. increasing heartbeatc. increasing digestiond. increasing perspiration  select the best answer from the choices providedabcd

Compare and contrast the impact of global commerce on european and asian dynasties. did any dynasty hold an advantage over others in controlling commercial networks and using them to enrich their societies?