External potential threats for a SWOT analysis may be listed as following:

• Entryof Foreign competitors into the Market
• Entry of new replacement products into the market
• Product being in a decline stage
• Changing customer needs/tastes
• A decline in customer trust
• Rival firms employing new strategies
• Increasing amounts of legal changes
• Economic collapse
• Changes in Central Bank policies
• New technology
• Demographic changes
• Barriers in entering foreign markets
• International political turmoil
• Drop in cash exchange rates

The rşght answer is C.