In which of the following country types is the practice of petitioning most common?

The __________ differential measures a person's subjective feelings about a concept, object, or other person indirectly by using sets of polar opposite adjectives to create a rating scale

Fill in the blanks with correct word

The conservation movement started in the late nineteenth century due to concerns about the effects of the __________

a. American Revolution b. Russian Revolution c. Chernobyl crisis d. Industrial Revolution