Final answer:
The correct answer is option b) CPT (Continuous Performance Test).
Step-by-step explanation:
The best-suited test for measuring an individual's attentional characteristics is b) CPT (Continuous Performance Test). This test requires participants to maintain focus and respond selectively to stimuli over a period, thereby directly assessing attention.
In contrast, the WCST (Wisconsin Card Sorting Test) is designed to assess Executive Functioning and cognitive flexibility rather than attention specifically. The MMPI (Minnesota Multiphasic Personality Inventory) is a self-report inventory consisting of true/false questions used to establish a clinical profile and assess personality characteristics, but it is not primarily designed to measure attention.
Lastly, the WAIS (Wechsler Adult Intelligence Scale) is an intelligence test that assesses a broad range of cognitive abilities but is not specifically tailored to measure attentional characteristics.