Authenticity |n. the quality of being real and true instead of fake and contrived | The police officer doubted the authenticity of the suspect’s story.

Avenue | n. an intangible path or approach to something | The company has decided to pursue other avenues.

Avid | adj. actively interested in or enthusiastic about something| Gerald is an avid soccer fan.

Resource: https://blog.prepscholar.com/sat-vocabulary-words