Andrew gives a speech on the benefits of biking to work instead of driving. he cites yahoo answers and his older brother as sources, and often strays off topic. andrew needs to work

Better supporting his ideas

Explanation:

 According to the given question, the Andrew is giving a speech on the different types of benefits of the biking rather than driving. So, that is why Andrew needs to improve on his ideas.

By improving the supporting ideas we also improve our thinking skills by using the various types of effective data or information.

The supporting ideas helps in proving the detailed information about the specific topic by providing proper reasons, explanations and proper descriptions.

 Therefore, Better supporting his ideas is the correct asmwer.

answer; english speaking;