Select from the drop-down menus the options that create the statement

Question

https://gmatclub.com/forum/download/file.php?id=86937 Select from the drop-down menus the options that create the statement that is most clearly supported by the information in the graph. The decrease in the GRAPH_1_PLACEHOLDER from 2007 to 2012 was mostly but not entirely due to the decrease in the GRAPH_2_PLACEHOLDER GMAT-Club-Forum-7yi4eq2p.png

Bunuel · Answer

https://gmatclub.com/forum/download/file.php?id=86937

Select from the drop-down menus the options that create the statement that is most clearly supported by the information in the graph.

The decrease in the  GRAPH_1_PLACEHOLDER  from 2007 to 2012 was mostly but not entirely due to the decrease in the  GRAPH_2_PLACEHOLDER

The question asks you to explain the decrease in palladium supply in X (drop-down 1) by a decrease in supply from Y (drop-down 2).

Start by checking the two drop-downs. The first drop-down lists the supply from Russia, South Africa, North America, or the global supply. The only option that makes logical sense is the  global supply  of palladium, because the sentence says that this decrease was mostly but not entirely due to a decrease in some region. That means the decrease being explained must be the global decrease, not the decrease from a single country.

Next, check how much the global supply actually decreased. In 2007 it is about 270, and in 2012 it is about 210, so the decrease is roughly 60.

Now look at the suppliers to see which one could account for most of that 60. Only Russia and South Africa are large enough to produce a drop of that size. South Africa decreases by about 10, while Russia decreases by about 55.

So the only supplier whose decline can explain most of the global 60-ton decrease is  Russia .

That gives the final pairing:

The decrease in the  global supply of palladium  from 2007 to 2012 was mostly but not entirely due to the decrease in the  supply of palladium from Russia .

Mosaib · Answer

Correct statement:
 The decrease in the global supply of palladium from 2007 to 2012 was mostly but not entirely due to the decrease in the supply of palladium from Russia.

Why this is correct

From the stacked bar chart:

1️⃣ Compare total global supply (2007 vs 2012)

2007 total ≈ 260 tonnes

2012 total ≈ 200 tonnes
➡ Overall decrease ≈ 60 tonnes

2️⃣ Compare Russia’s supply (largest contributor)

2007 Russia ≈ 140 tonnes

2012 Russia ≈ 90 tonnes
➡ Decrease ≈ 50 tonnes

So Russia alone explains most of the global drop (50 out of 60 tonnes).

3️⃣ Check other regions

South Africa → small decrease

North America → slight increase

Others → small change

Since other regions changed too, the global decline is not entirely due to Russia — but Russia accounts for the majority of the drop.

Select from the drop-down menus the options that create the statement

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Select from the drop-down menus the options that create the statement

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