Water could raise the city by one foot. is this a fact or opinion? explain.

An opinion. " could" is the hint word. If it said water can raise the city by one foot than the statement would had been a fact. 

This is what i found “an elliptical clause is a type of dependent, or subordinate, clause that is missing a word or words. often, the missing part is a verb or verb phrase. while elliptical clauses are acceptable to use, they can sometimes cause confusion for writers and readers, especially when the sentence ends with a pronoun.” i hope this you for what your looking for. can you plz mark me brainliest?

This is a complete adjective clause.