It should be noted that best answer to both the flatness and horizon problems is inflationary epoch.
The inflationary epoch van be regarded as the period in the evolution of the early universe, at this period there was an expansion.
According to inflation theory, the earth were recorded to experience great horizon problems and exponential expansion.
Therefore, inflationary epoch brings about both flatness and horizon problems
Learn more about inflationary epoch at:
https://brainly.com/question/11356270