Which is a positive effect of the technological advance of going from a compass to a gps?

a. the gps gives more accurate information.

b. the gps is less expensive.

c. the gps is easier to manufacture.

d. the gps uses less electricity.

Option A, The GPS gives more accurate information.

Explanation:

GPS stands for global positioning system in which the satellite sends information regarding position any individual, place or thing in terms of bearings (latitude and longitude) with respect to time.  There are total 24 satellites that rotate around the earth  twice with in a period of 24 hours and hence are capable of locating the position of any object more accurately as compared to compass.  Also the percentage accuracy of GPS as compared to a compass is extremely high  

Hence, option A is correct.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.