Question $4$

Insulating concrete forms $($ICFs$)$:

Select one:

Select one:

a$.$ place the insulation at the core of the concrete wall.

b$.$ can be filled with concrete in a high$-$lift operation.

c$.$ come in entire$-$wall size.

d$.$ are interlocking blocks that can be placed easily.

e$.$ are forms made of insulating concrete.