Frank is writing an email to convince the management at his office supply company to adopt his proposed marketing strategy.

Which sentence uses ethos to appeal to the audience?

"For four years now, we’ve used flyers and TV ads to sell our products." "However, as the latest quarterly report indicates, our sales have not improved." "As a marketing strategist with more than eight years of experience, I have the expertise needed to revise our company’s plan." "The missing piece in our marketing strategy is social media."

Quotations separate the sentences to choose from.