Unscramble the letters of the words and find the odd one out.
TLAES can also be unscrambled to SLATE on which we write. Therefore, all the three options slate, book and paper are the materials on which we write whereas pencil is used for writing and so it is the odd one out.
Resin Producing Plants are poisonous for them, not they are poisonous for resin producing plants, as per the passage.