Correct Answer: parasite

Solution : The correct choice is the fourth option .

The most appropriate word for the given group of words is parasite . It means a plant or an animal that lives in or on another plant or animal and gets its food from it .

The meanings of the other options are as follows:

• A hypocrite is a person who puts on a false appearance of virtue or religion.
• Shrewd means to be able to judge people and situations well and make good decisions.
• A flatterer is someone who praises people without being sincere.