What material is used to fill nail dimples or indentations on finished drywall?

The correct answer is joint compound, which is commonly used to fill nail dimples or indentations on finished drywall. Joint compound, often referred to as "mud," has the right consistency and properties to smoothly fill the small holes left by nails or screws and to create a seamless surface on drywall.

It can be easily applied with a putty knife and sanded down after drying to achieve a perfect finish that blends with the surrounding wall. Joint compound can also be used for taping and finishing seams between drywall sheets, making it a versatile choice for drywall work.

In contrast, spackle is generally suited for smaller repairs, such as filling small holes and cracks in walls, but it is not as ideal for larger areas or more significant imperfections. Wood filler, as its name implies, is specifically formulated for use with wood materials and would not adhere properly to the surface of drywall. Textured spray is used to create decorative finishes and would not effectively fill nail dimples; it is a different application entirely. Thus, joint compound is the most suitable and commonly used material for this specific task in drywall finishing.