Canada is surrounded by all the following bodies of water except
a. baffin bay
b. the labrador sea
c. the arctic ocean
d. the gulf of mexico

The Gulf of Mexico is very far from Canada! In fact it is separated from Canada by the entire US, as it's only on the southern side of Florida, Alabama and other states- it also borders Mexico, which Canada does not border directly.

So the correct answer is the Gulf of Mexico.

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor:

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