Which of the following is an example of an open-loop system?
O A.
setting an automatic sprinkler system
OB. setting the thermostat to 72°
OC. steering a car
OD. dialing a phone number

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it

A) the sequence of bases would halt the production of any proteins. 

Dont understand the question