Directions: Select the most appropriate filler(s) for the blank(s) such that the sentence makes coherent sense.

________ books are those that are best not read since they are _________ and indecent.

After reading the sentence we get the trait of books that are not be read which are indecent. So the first blank should be filled by a kind of book, which contains indecent contents. Allegorical books are those representing moral symbols. Adventurous books do not necessarily contain indecency nor can it be said about perspicacious books which are insightful. However, salacious books are lustful, obscene which fit perfectly in the first blank. Therefore (3) is the correct answer.