correct the text by inserting one comma.\nindias living root bridges actually get more durable with age…

Brief Explanations:

To correct the sentence, we need to insert a comma to separate the main clause from the contrasting phrase "unlike their nonliving counterparts". The correct placement is after "age" to clarify the contrast between the durability of living root bridges and nonliving ones.

Answer:

India's living root bridges actually get more durable with age, unlike their nonliving counterparts.