Answer:
a. WAIS-IV
Step-by-step explanation:
The Wechsler Adult Intelligence Scale-IV is the most appropriate for Jane's group age because it is designed to evaluate individuals between the 16-90 years range. This test would be great to measure Jane's intelligence and cognitive ability by focusing on four aspects of intelligent: verbal comprehension, perceptual reasoning, working memory, and processing speed. And in the given case that Jane had a certain psychiatric illness, the test might also allow for its diagnosis.