<human>: Here is a goal: How to secure letters onto styrofoam sign.

Which way makes more sense to accomplish this goal?

OPTIONS:
- Put small dots of water along the back of each letter and place onto styrofoam and let dry.
- Put small dots of glue along the back of each letter and place onto styrofoam and let dry.
<bot>: Put small dots of glue along the back of each letter and place onto styrofoam and let dry.