[a b c] is a:Question 4Answera.Row matrix.b.Diagonal matrix.c.Column matrix.d.Zero matrix.

To determine the correct answer for the matrix $[a \; b \; c]$, we will go through the options provided.

1. Understanding Matrix Types

   • A Row Matrix is a matrix with a single row.
   • A Column Matrix has only one column.
   • A Diagonal Matrix is a square matrix in which all the elements outside the main diagonal are zero.
   • A Zero Matrix is a matrix in which all the elements are zero.

2. Analyzing the Given Matrix

   • The matrix $[a \; b \; c]$ consists of a single row and multiple columns (3 in this case).

3. Identifying the Correct Option

   • Since the given matrix has only one row, it fits the definition of a row matrix.

Final Answer

The correct answer is a. Row matrix.