Saussure delivered his series of lectures on general linguistics, later published after his death as Course in General Linguistics, at the University of ___________

The correct option is Geneva.

Ferdinand de Saussure, a pioneering Swiss linguist whose ideas laid the foundation for many significant developments in both linguistics and semiotics in the 20th century, delivered his landmark lectures on general linguistics at the University of Geneva.
He taught these courses there between 1907 and 1911. Following his death in 1913, his colleagues and students reconstructed his lectures from his notes and student transcripts, publishing the seminal work Course in General Linguistics (Cours de linguistique générale) in 1916.