Choose the correct word to complete the sentence:

Zoe spent a peaceful afternoon reading on a deck overlooking the disheveled placid( disheveled, placid ) lake.

Instead of giving As to students with a 90 or above on the test, Mrs. Voetberg decided to arbitrarily retroactively( arbitrarily, retroactively ) choose 5 students to receive an A and 5 students to receive an F using a random name generator.

The judge refused to let Jonah's confession be heard by the jury since it was made under duress sham( duress, sham ).

Sam didn't directly accuse Alex of flooding his back yard with a garden hose, but he evaded insinuated( evaded, insinuated ) that it was his fault.