The biggest direct impact of greenwashing most likely relates to:

Greenwashing—misleading claims about a company's environmental efforts—directly leads to a loss of consumer trust (Option C).

Consumers become skeptical of sustainability claims, leading to brand damage and reduced sales.

Companies caught greenwashing (e.g., Volkswagen Dieselgate, H&M’s false sustainability claims) suffer reputational and financial losses.

Option A (Labor strikes) can occur due to ESG issues, but greenwashing itself does not directly trigger strikes.

Option B (Greater regulation) is a secondary consequence, but the direct impact is consumer trust erosion.