Interpreting Price Trends in Countries from the Graph

Steps:

• Examine the line for Costa Rica: it shows an increase from 2014 to 2015, then a decrease to 2016.
• Check India and Mauritius lines: both exhibit changes, not flat constancy between 2015 and 2016.
• Review Thailand and Japan lines: they indicate increases from 2015 to 2016, not decreases.
• Compare all options against graph data to identify the accurate trend description.

Why A is correct:

• The graph depicts Costa Rica's prices rising in 2015 relative to 2014 and falling in 2016 below 2015 levels, matching the definition of a peak-and-decline trend.

Why the others are wrong:

• B: Graph shows fluctuations in India and Mauritius prices between 2015 and 2016, not constancy.
• C: Thailand and Japan prices rose from 2015 to 2016, contradicting the decrease claim.
• D: Identical to C, which misrepresents the upward trend in Thailand and Japan.

Final answer: A