Keeling began measuring tropospheric carbon dioxide concentrations at Mauna Loa observatory in Hawaii in 1958. This is a remote location away from urban and industrial areas. If Keeling had instead established his CO₂ monitoring station near a large coal-fired power plant then .

Mauna Loa

Explanation:

The measurement of carbon dioxide are uncontaminated by the emanation from the well of production of lava. The estimations show a consistently expanding tend of CO2 fixations noticeable all around, a pattern that is affirmed by numerous estimations made somewhere elseThe observatory close to the summit of the Mauna Loa spring of gushing lava in Hawaii has been recording the measure of carbon dioxide noticeable all around since 1958. This bend is usually known as the Keeling Curve Hence, the right answer is "his measurements would be higher at a spot like Mauna Loa"

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