Question

anecdotal evidence is limited by its:
a. limited scope
b. requirement for expert validation
c. complex statistical nature
d. difficulty in documentation

Explanation:

Anecdotal evidence is based on personal accounts or isolated examples. It lacks a large - scale, representative sample. So, its scope is limited as it cannot generalize to a broader population. It doesn't require expert validation (it's more about personal stories), it's not complex statistically (it's simple and non - scientific in nature), and documentation isn't its main limitation (the main issue is its non - generalizable nature).

Answer:

a. Limited scope