Select the most appropriate option to fill in the blank.

Generally people use ______ oils for their cooking.

refined

The most appropriate option to fill in the blank is refined.

The sentence is about the type of oils that people generally use for cooking. The word "refined" means to remove impurities from something. It is the most appropriate word to use in this context because it describes the process of removing impurities from oils, which makes them suitable for cooking.

The other options are not as appropriate.

• Improved means to make something better. This does not make sense in the context of the sentence because the oils are not being made better, they are simply being made purer.
• Washed means to clean something with water. This does not make sense in the context of the sentence because the oils are not being cleaned with water, they are being refined.
• Cleared means to make something free from obstacles. This does not make sense in the context of the sentence because the oils are not being cleared of obstacles, they are being refined.