Question

The wooden staircase we had worked so hard to build was irregularly curved because the boards had _______.

Answer 1

The irregularly curved wooden staircase was most likely caused by the boards that 'doubled back' on themselves.

Step-by-step explanation:

The irregularly curved wooden staircase was most likely caused by the boards that 'doubled back' on themselves. This means that instead of being laid out in a straight line, the boards were laid out in a curved pattern where they turned back on themselves. This would create a curved shape for the staircase.