Answer:
Identity Property
Step-by-step explanation:
The property shown in the given matrix addition is identity property (of addition)
Let's define additive identity first,
For all real numbers there is exists a number zero which is when added to any real number, the number remains the same. The number is called additive identity.
Similarly, for matrices, there exists a matrix of same dimensions that is when added to the matrix, gives the same result as the original matrix.
The matrix is denoted by O and it only contains zeros..
