Error spotting (exam direction): Identify the erroneous part (A/B/C) — choose D if there is no error — 'In a report issued by Indian Statistical Institute, / the Iron and Steel Industry is investing more than any other / Indian industry in fighting pollution. / No error.'

Given parts (A–D)
A. In a report issued by Indian Statistical Institute,B. the Iron and Steel Industry is investing more than any otherC. Indian industry in fighting pollution.D. No error.

Concept/Approach (comparative placement and parallelism)
The modifier 'in fighting pollution' is awkwardly attached at the end, creating a comparison ambiguity. The natural, unambiguous structure is: '…is investing more in fighting pollution than any other Indian industry.'

Step-by-step correction
1) Move the gerund phrase: place 'in fighting pollution' immediately after 'investing'.2) Correct version: 'The Iron and Steel Industry is investing more in fighting pollution than any other Indian industry.'

Verification/Alternative
Right-branching reduces ambiguity in comparative clauses.

Common pitfalls
Dangling/remote placement of modifiers in comparisons.

Final Answer
C — reposition 'in fighting pollution': '…investing more in fighting pollution than any other Indian industry.'