-- Database schema
| state : StateCode [ TEXT ] primary_key , State [ TEXT ] , Region [ TEXT ] | callcenterlogs : Date received [ DATE ] , Complaint ID [ TEXT ] primary_key , rand client [ TEXT ] callcenterlogs.rand client = client.client_id , phonefinal [ TEXT ] , vru+line [ TEXT ] , call_id [ INTEGER ] , priority [ INTEGER ] , type [ TEXT ] , outcome [ TEXT ] , server [ TEXT ] , ser_start [ TEXT ] , ser_exit [ TEXT ] , ser_time [ TEXT ] | client : client_id [ TEXT ] primary_key , sex [ TEXT ] , day [ INTEGER ] , month [ INTEGER ] , year [ INTEGER ] , age [ INTEGER ] , social [ TEXT ] , first [ TEXT ] , middle [ TEXT ] , last [ TEXT ] , phone [ TEXT ] , email [ TEXT ] , address_1 [ TEXT ] , address_2 [ TEXT ] , city [ TEXT ] , state [ TEXT ] , zipcode [ INTEGER ] , district_id [ INTEGER ] client.district_id = district.district_id | district : district_id [ INTEGER ] primary_key , city [ TEXT ] , state_abbrev [ TEXT ] district.state_abbrev = state.StateCode , division [ TEXT ] | events : Date received [ DATE ] , Product [ TEXT ] , Sub-product [ TEXT ] , Issue [ TEXT ] , Sub-issue [ TEXT ] , Consumer complaint narrative [ TEXT ] , Tags [ TEXT ] , Consumer consent provided? [ TEXT ] , Submitted via [ TEXT ] , Date sent to company [ TEXT ] , Company response to consumer [ TEXT ] , Timely response? [ TEXT ] , Consumer disputed? [ TEXT ] , Complaint ID [ TEXT ] events.Complaint ID = callcenterlogs.Complaint ID , Client_ID [ TEXT ] events.Client_ID = client.client_id | reviews : Date [ DATE ] primary_key , Stars [ INTEGER ] , Reviews [ TEXT ] , Product [ TEXT ] , district_id [ INTEGER ] reviews.district_id = district.district_id |
-- -- What is the name of the state in which there have been the largest number of complaints with priority 0?

SELECT T2.state FROM callcenterlogs AS T1 INNER JOIN client AS T2 ON T1.`rand client` = T2.client_id INNER JOIN district AS T3 ON T2.district_id = T3.district_id INNER JOIN state AS T4 ON T3.state_abbrev = T4.StateCode WHERE T1.priority = 0 GROUP BY T2.state ORDER BY COUNT(T2.state) DESC LIMIT 1;