Final answer:
Howard Gardner is the psychologist who proposed the Multiple Intelligences Theory with originally seven components, which later became eight intelligences. (Option is A).
Step-by-step explanation:
The psychologist who believed intelligence had seven components is Howard Gardner. Gardner developed the Multiple Intelligences Theory, which proposes that each person possesses a variety of intelligences.
These intelligences include linguistic, logical-mathematical, musical, bodily kinesthetic, spatial, interpersonal, intrapersonal, and later he added naturalistic intelligence.
This theory has been influential in education, though it has faced criticism from cognitive psychologists for lacking empirical support.
The correct option is a) Howard Gardner