Wooden arms are made mainly of two types of wood: pine and ?.

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Multiple Choice

Wooden arms are made mainly of two types of wood: pine and ?.

Explanation:
Both pine and fir are softwoods from conifers, known for being light and easy to work with. When a project uses two woods with similar properties, pine is paired with fir because they share comparable density, shrinkage, and how they take glue and nails. This makes the construction straightforward and cost-effective. The other options are hardwoods—hickory, maple, and oak—which are denser and stiffer and used for different applications, so they aren’t the typical pairing with pine in this context.

Both pine and fir are softwoods from conifers, known for being light and easy to work with. When a project uses two woods with similar properties, pine is paired with fir because they share comparable density, shrinkage, and how they take glue and nails. This makes the construction straightforward and cost-effective. The other options are hardwoods—hickory, maple, and oak—which are denser and stiffer and used for different applications, so they aren’t the typical pairing with pine in this context.

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