From the common explanation, we get all are facing away from the centre except Manu.
Hence, Option C is correct.
Final Arrangement:
Common Explanation:References:
Eight students Kirti, Ayushi, Manu, Sona, Aarti, Bobby, Ankita and Divya are sitting around the square table.
Four students sit on each side while rest on each corner.
Students at the side face away from the centre and students at the corner faces towards the centre.
Inferences:
So, we need to arrange as follows to accommodate the information as stated in the question,

References:Divya sits third to the left of Ayushi.
Kirti sits opposite to Manu and both faces away from the centre.
Inferences:
From the above references, we get the following two different cases:
Case 1:
Case 2:
References:Neither Kirti nor Manu are beside Ayushi.
Sona sits immediate left of Ankita, who sits on the side of the table.
Bobby is not an immediate right of Ayushi.
Bobby is not adjacent to Manu.
Inferences:
So, from this case 2 will be eliminated as neither Kirti nor Manu are beside Ayushi.
Now, from case 1 we get the following final arrangements: