Finish the following sentence with the best choice: How can you tell someone is lying?

Choices:
- Sometimes when a person is lying, they will inadvertently shake their heads, subconsciously denying their own statement.
- Sometimes when a person is lying, they will purposely shake their heads, subconsciously denying their own statement.

Answer:
Sometimes when a person is lying, they will inadvertently shake their heads, subconsciously denying their own statement.