The advantages of a single emergency number had been seen by municipal officials across the country, recognizing that their variety of emergency-response systems had become obsolete, leading to nationwide standardization in the 1980s.
(A) The advantages of a single emergency number had been seen by municipal officials across the country
, recognizing that their variety of emergency-response systems had
Incorrectrecognizing modifies previous clause that is illogical
(B)
The advantages of a single emergency number had been seen by municipal officials across the country,
and they recognized their variety of emergency-response systems as having had
Incorrectthey refers to advantages that is illogical
(C)
After seeing the advantages of a single emergency number, municipal officials across the country recognized that their variety of emergency-response systems had Correctclear and concise
(D) After sight of the advantages, resulting from a single emergency number, municipal officials across the country recognized their variety of emergency-response systems
as having had Incorrectas having had uses wrong
(E) After the advantages of a single emergency number were seen by municipal officials across the country
, who recognized that their variety of emergency-response systems had
IncorrectAfter seen advantages municipals do what?