Temp
200
100
0
L5_239
K5_106
artifact
K3_18
K3_9
Flint artifacts dating to 800,000 to 1,000,000 years ago have been
recovered from the Evron Quarry in Israel. Likely created by the hominin
Homo erectus, the artifacts have no visual features suggesting that they
were exposed to fire, leading some scholars to conclude that these
hominins had not acquired control of fire. But Zane Stepka and colleagues
recently used a new method to determine whether these artifacts had
been exposed to temperatures above 400°C (the typical temperature
campfires reach) and concluded that the hominins who inhabited the site
may have had control of fire.
Which choice best describes data in the graph that support the team's
conclusion?