Final answer:
DATA-FLOW is not an early programming language like BASIC, COBOL, FLOW-MATIC, or FORTRAN; it's a programming model, making it the correct answer for which one did not belong to the initial wave of programming languages.
Step-by-step explanation:
The early programming language that was not part of the initial wave of programming languages is c) DATA-FLOW. The others listed — BASIC, COBOL, FLOW-MATIC, and FORTRAN — were all developed in the late 1950s and early 1960s. BASIC (Beginner's All-purpose Symbolic Instruction Code) was designed in 1964 to enable more people to write programs. COBOL (Common Business Oriented Language), first released in 1959, was designed for business applications. FLOW-MATIC was developed by Grace Hopper in the 1950s and influenced the development of COBOL. FORTRAN (Formula Translation), created by IBM in the 1950s, was aimed at scientific and engineering applications. On the other hand, DATA-FLOW is a programming model rather than a specific early programming language, and it does not belong to the category of early languages like the others.