Appropriate training outcomes need to discriminate, meaning that .

a. tests given to employees before and after a training program should differ
b. different employees should be given different tests for measuring their performance
c. trainees should be asked to take a reliable test
d. trainees' performance on the outcome should actually reflect true differences in performance

d. trainees' performance on the outcome should actually reflect true differences in performance.

Explanation:

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.

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