Final answer:
Hot glue is commonly used when using Styrofoam in a memorial arrangement because of its strong bonding properties and versatility.
Step-by-step explanation:
The adhesive that is commonly used when using Styrofoam in a memorial arrangement is hot glue. Hot glue is a type of thermoplastic adhesive that becomes liquid when heated and solidifies when it cools down. It is often used in arts and crafts projects because of its strong bonding properties and versatility. When using hot glue to attach Styrofoam in a memorial arrangement, make sure to apply the glue evenly and allow it to dry completely.