Focus on describing your written and verbal communication skills. If you have a former supervisor who commented on your excellent communication skills in a letter of recommendation or performance review, use their description in your response. The interviewer wants to know that you can speak clearly with others while properly documenting reports and other forms of written communications.

"I have solid communication skills and feel this skill is one of my greatest strengths. I took two years of communications courses in college and have honed my verbal and written communication skills over the years. I have a letter of recommendation from my previous employer highlighting these skills and have a copy if you would like to see it."