A paragraph-ending line that appears by itself at the top of a page is called a(n) ________

John Backus was instrumental in the development of the two languages ______ and ________ in the late 1950s.

Fill in the blank(s) with the appropriate word(s).

This collaborative support group began as a cooperative effort between the FBI's Cleveland field office and local technology professionals with a focus of protecting critical national infrastructure.

A. InfraGard B. Homeland Security C. CyberWatch D. CyberGard