Explanation:This question considers how the environment can influence epigenetics and so gene expression.The plant at higher temperature has a flowering stem.At high temperature, the plant flowers, showing the pro-flowering gene is more expressed, and there isless H2A.Z at the pro-flowering gene.The amount of H2A.Z bound is reduced at high temperature, but there is no evidence of it bindingdifferent places.Early flowering plants would have more pro-flowering gene expression, and therefore less of thetranscriptional repressor H2A.Z bound at these genes.