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The writer is trying to improve cohesion in the paragraph below. Which words or phrases would best connect the ideas presented?

Visual social media platforms and cell phone makers offer applications and tools that allow teenage users to manipulate their appearances. Users can alter their appearances by adding physical features such as beauty marks and freckles or by removing those very same features and others such as a birthmark or a blemish. What message are these makers sending? What type of thinking are they promoting? Although teens argue that these tools and applications are used for fun, research conducted by three leading universities found that these tools hinder teen productivity and lower their self-esteem. Moreover, in an article written by two prominent psychologists, software that allows people to alter their appearances sends the message that something is wrong with an individual's original appearance. They went on to add that these applications and tools can lead to illnesses that impact people's physical and social well-being.