The market opportunities most relevant to a low cost provider of mobile phones are those that

hold the most potential to reduce dropped calls.

provide a strong defense against threats to the company's profitability.

provide differentiation features to take market share away from close rivals.

offer the best prospects for growth and profitability in emerging markets.

embrace the most potential for product innovation.

Offer the best prospects for growth and profitability in emerging markets.

Explanation:

Option 1: This is invalid because, it is not designed to satisfy the avoidance of dropped calls

Option 2: Low cost provider of mobile phones does not defense on company's profitability

Option 3: The features might not be higher since it is low-cost. So this option is also invalid

Option 4: Low-cost products catches the eyes of the society. Many people need low cost product which would give acceptable performance. This in turn attracts the people and there is a chance of service provider growing good in market.

Option 5: Invalid