Answer : 4. "Can't be determined"
Explanation :

Answer: D) Can't be determined Explanation: We know that a negative value plus a positive value always count backward and the sign depends on the bigger value sign. When you are adding a negative number to a positive number, then the value counts backward and takes the sign of the biggest number.   For example:: Adding -5 and +2 -5 + 2 = -3 (big number is 5 and its sign is '-')   Adding -3 and  +5 +5 + (-3) = 5 - 3 = +2(big number is 5 and it has sign '+').