Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: Foam weather stripping is often placed in the frames of doors and windows in a home. What is the purpose of this weather stripping?
The weather stripping reduces heat loss due to convection.
Seals gaps to prevent air leakage.