The correct answer is: B. The Explorer
The Explorer was a low-cost LISP machine produced by Texas Instruments Incorporated in the early 1980s. It was designed for use in education and business, and was one of the first personal computers to be based on the LISP programming language.
The Explorer was a 16-bit machine with a 1 MHz processor and 64 KB of RAM. It had a built-in BASIC interpreter, and could be programmed in LISP, BASIC, or FORTRAN. The Explorer also had a number of built-in applications, including a word processor, a spreadsheet, and a database management system.
The Explorer was not a commercial success, but it was influential in the development of personal computers. It was one of the first personal computers to be based on a high-level programming language, and it helped to popularize the use of LISP in education and business.
The other options are incorrect for the following reasons:
- A. The Computer-Based Consultant was a mainframe computer produced by IBM in the 1960s.
- C. Smalltalk is a object-oriented programming language developed at Xerox PARC in the 1970s.
- D. The Personal Consultant was a personal computer produced by Wang Laboratories in the 1980s.
- E. None of the above is a correct answer.