Select the most appropriate option to fill in the blank.

This app is a very ______ one for online shopping.

convenient

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

• Convenience means the quality of being easy and practical to use. It is the most appropriate option to fill in the blank because it describes the app's ease of use for online shopping.
• Competency means the ability to do something well. It does not make sense in the context of the sentence because it does not describe the app's ease of use for online shopping.
• Capable means having the ability to do something. It does not make sense in the context of the sentence because it does not describe the app's ease of use for online shopping.
• Convenience is a noun, while the other options are adjectives. The sentence is looking for an adjective to describe the app, so convenient is the best option.