Answer:
They aggressively hold their current strategic position by doing the best job they can to hold on to customers in a particular market segment.
Step-by-step explanation:
Defenders never seek extreme growth. Instead, they are playing safe and like to keep their current position secured and untouched., thus having moderate growth. Their customer base is defined and their product portfolio is tried and tested. They seek to keep their existing customers, maintaining a strong market position in the segment.