Terrance, a $52-$year$-$old software engineer, decided to go back to work after six months of unemployment. Terrance went on a job interview. Toward the end, the interviewer said, "You have great experience and I$\text{'}$m sure you are very talented. Our work environment is very fast paced, intense, and future forward. Do you think you'd be able to keep up with the young programmers?" Terrance was stunned and didn't really know what to say. In this situation, Terrance's experience is an example of experiencing discrimination at a:

Window

Pathway

Gateway

Passthrough