Sentence improvement — Evaluate whether any change is needed in ‘‘if it hadn't been for his invaluable advice... I wouldn't have achieved anything...’’ considering correct adjective choice and uncountable noun usage with ‘‘advice.’’

Given data
In fact, if it hadn't been for his invaluable advice on so many occasions I wouldn't have achieved anything in life.

Concept/Approach
‘‘Advice’’ is an uncountable noun; it does not take a plural advices. ‘‘Invaluable’’ correctly means ‘‘extremely valuable/priceless’’ and is standard in formal praise.

Option analysis
remarkable advice — Possible, but weaker than the intended meaning and needlessly changes emphasis.valuable advices — Grammatically wrong (plural count form).priceless suggestion — Changes the noun from ‘‘advice’’ to ‘‘suggestion’’ (countable); alters meaning.No improvement — Retains the correct and idiomatic phrase ‘‘invaluable advice’’.

Final Answer
No improvement