Answer:
The best answer to the question: What would be the best safety feature for Sylvia´s design, would be: Shorter buildings designed with some flexibility, enabling them to move without falling apart during an earthquake.
Step-by-step explanation:
Transform boundaries are defined as geological places where two plates meet and slide against each other in a horizontal fashion. San Andreas fault, in California, is one such example. The issue with these boundaries is that they tend to move with a certain level of frequency, which means, that people who live near, or over, them, will experience small, recurrent earth movements that will not be strong enough to affect buildings, or their lives, but that can put a building´s resistance capacity to the test. If built too high, at some point the structure might find itself losing its resistance. Whereas if Sylvia goes with the shorter buildings, that have flexibility to move, this constant movement of the plates will be basically harmless as it will not damage the structure.