Most expensive design Vs Most recent design

In the past, making structures quake-resistant meant firm yet
materials, such as steel and wood, that bend without breaking. Later, people tried to lift a building off its foundation, and insert rubber and steel between the building and its foundation to reduce the impact of ground vibrations. The most
expensive/recent designs give buildings brains as well as concrete and steel supports, called smart buildings, the structures respond like living organisms to an earthquake’s vibrations. When the ground shakes and the building tips forward, the computer would force the building to shift in the opposite direction. The new designs should offer even greater resistant
to cities where earthquakes often take place.

My Approach

In the first blank, I am unable to find the difference that would be more appropriate

In the second blank, as per definitions I could see the following meanings and found resistant to be more appropriate because the new designs offer greater resistant/protection to cities.

resistant –> Immune to /immunity/protect

security –> safety

Can anyone guide me on the approach? Thanks in advance


Expensive buildings are not necessarily the smartest ones. There existed expensive buildings like mansions and deluxe apartments even before the concept of smart buildings came into existence. Hence the correct choice will be recent, because it is something more of a new technique that has developed or is developing over the years.

We use the noun form in such cases depicting qualities. Hence I believe it should be resistance (as said by chasly-supports Monica in their comment to your question).

From Lexico,

resistanceThe ability not to be affected by something, especially adversely

Source : Link , Question Author : Jalaj Chawla , Answer Author : Dhanishtha Ghosh

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