Correct Answer: 3, 1, 5, 4, 2

Solution : Given :
1. Maternity 2. Mundane 3. Maternal 4. Motor 5. Mother

Step 1: We can see the first letter is common in all so we will start from the second letter.
Step 2: The second letter of each word is a, u, and o. Based on the alphabetical order, we can arrange them as – M a ternity, M a ternal, M o tor, M o ther, M u ndane.
Step 3: Compare the seventh letter of (Matern i ty, Matern a l). Maternal will come before Maternity as a comes before i in the alphabetical series.
Step 4: Compare the fourth letter of (Mot o r, Mot h er). Mother will come before Motor as h comes before o in the alphabetical series.

So, the sequence will be Maternal, Maternity, Mother, Motor, Mundane, or 3, 1, 5, 4, 2. Hence, the third option is correct.