In which year is the proportion of copper production in the total mineral and metal production the highest?
Explanation:
Growth rate in production = Difference in production in 2011 and 2005Production in 2005 × 100
From to the table :
Proportion of copper production in each year:
Hence we see that the copper production as a proportion of the total mineral and metal production is maximum in the year 2007.
Hence, option (d).
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