Answer:
A
Explanation:
An adjective is used to describe a noun.
"for which I have been waiting my whole life" (adjectival clause) describes the opportunity (noun).
Also most adjectival clauses start with "which".
If you are asking about his troubles with the Cicones, then it is his crewmen he blames.
Last option, it explains how water can be used more efficiently
Explanation:
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