The line graph illustrates the average monthly change in price of 3 metals during 2014

The provided line graph illustrates the monthly price fluctuations of three distinct metals throughout the duration of 2014. Broadly speaking, the cost trends for

nickel

and

copper

displayed a consistent decline over the observed period,

while

zinc showcased an opposing upward trajectory. Particularly noteworthy is the pronounced volatility evident in

nickel

's pricing. Examining the initial six months of the year, it becomes evident that

nickel

experienced a substantial decrease from precisely 6% in January to 1% in March, reaching a nadir of -3% in June.

Conversely

,

copper

exhibited a gradual decline of approximately 1.5% during

this

timeframe.

On the other hand

, zinc commenced the year at exactly 1% in January, surged to 3% in February, and

then

sharply declined to -3% in June. Transitioning to the latter half of the year, despite some fluctuations, both

nickel

and zinc witnessed a rapid ascent to exactly 2% and 1% respectively, between June and December. Meanwhile,

copper

's price trajectory saw a moderate increase to precisely 1% in July, maintaining

this

level for the subsequent three months before dipping to approximately 0.5% in December.

Following

this

downturn,

copper

's price rebounded to roughly 1.5% by the close of the period.