According to burns, transforming leaders are most likely to appeal to

According to Burns who made a book in title Transforming Leadership it appeals to moral values, consciousness, and energies.  The admirers elevate transactional and activate their self-interest. For Burns, changing can occur at any time and may be shown by anyone.

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.

answer; no longer than a reasonable period of time;