Answer:
No, because they violated the duty of care
Step-by-step explanation:
Business judgement rule is a provision that protects the management of a business from frivolous legal action concerning the way it does business.
The court assumes that the management acts in good faith in its fiduciary role, standard of loyalty, prudence, and care.
Duty of care is breached when the management do not make reasonable effort to prevent injury or loss.
In this instance Signal board is not protected by the business judgement rule because they violated duty of care.
Although the offer by Burmah oil is above the valuation a month ago, the board did not bother to do a present valuation or find out if other companies want to buy the subsidiary at a higher price.