Final answer:
Pervasively material scope limitations occur when the auditor is unable to gather sufficient appropriate evidence and cannot express an opinion on the financial statements.
Step-by-step explanation:
Pervasively material scope limitations occur when the auditor is unable to gather sufficient appropriate evidence and cannot express an opinion on the financial statements. This is option 2 from the given choices. When a modified opinion is issued due to pervasively material scope limitations, it means that the auditor was not able to obtain enough evidence to form an opinion on the overall fairness of the financial statements.