'a' is correct, As 'valuable ' is a polysyllable word,' the most' has to be used to form the Superlative degree
That Romeo will lose interest or love somebody else.
Answer:
Hello! Written in the middle of a France destroyed by war and belonging to the existentialism genre, Meursault is a character indifferent to life who denies all social, religious and even ethical conventionalism, this makes uncomfortable the reader and also the other characters related with the law. Camus portrait how something who doesn't fit in the social rules should be exterminated since the protagonist feels such as something like a shadow.