दिए गए वाक्य के भागों को विकल्पों के रूप में दिया गया है। उनमें से किसी एक में त्रुटि हो सकती है। दिए गए विकल्पों में से उस भाग का चयन करें जिसमें त्रुटि है। यदि आपको कोई त्रुटि नहीं मिलती है, तो अपने उत्तर के रूप में 'No error' चुनें। Southern states has made an impressive comeback in the latest rankings.

The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don't find any error, mark 'No error' as your answer. Marine vertebrates are / valuable for / many reasons.

The following sentence has been split into four segments. Identify the segment that contains a grammatical error. To descend a cragged / mountain, however, was most / difficult and dangerous / than to ascend it.