7. Circle the letter of the structure that is least likely to be damaged in a major earthquake. a. reinforced steel -frame building b. nonflexible wood -frame building c. unreinforced stone building d.unreinforced brick building

## Step 1<br />The problem is asking us to identify the structure that is least likely to be damaged in a major earthquake. The options provided are: a) reinforced steel-frame building, b) nonflexible wood-frame building, c) unreinforced stone building, and d) unreinforced brick building.<br /><br />## Step 2<br />We need to consider the properties of each structure in relation to earthquakes. Earthquakes cause structures to shake and potentially collapse. The ability of a structure to withstand such forces depends on its design and construction materials.<br /><br />## Step 3<br />Reinforced steel-frame buildings are known for their strength and durability. They are designed to withstand high forces and are often used in areas prone to earthquakes. The steel frame provides a strong structure that can resist the shaking forces of an earthquake.<br /><br />## Step 4<br />On the other hand, nonflexible wood-frame buildings, unreinforced stone buildings, and unreinforced brick buildings are less likely to withstand the forces of an earthquake. These structures lack the necessary reinforcement to resist the shaking forces, making them more susceptible to damage.