Answer:
d.both answers 1 and 3 occur.
That is
a.the company has competencies and capabilities to efficiently sustain its competitive differentiation.
c.the company's competitive advantage grows out of the entire system of activities working together.
Explanation:
In a perfectly competitive market firms have similar products and so they must compete with each other to get market share.
Gaining a competitive advantage is key in surviving within the market.
Differentiation of its products is the first step to success. When a firm's product is differentiated from others it will gain more customer loyalty as the end user identies the product with a particular trait for example high quality.
When the companie's activities are well synchronised the company achieves efficiency which is a competitive advantage of higher output than other firms.