Answer:
E = 207 GPa
Explanation:
Young's modulus is given by following equation:
[tex]E = \frac{\sigma}{\epsilon}[/tex]
Where [tex]\sigma[/tex] and [tex]\epsilon[/tex] are stress and strain, respectively.
By replacing terms:
[tex]E = \frac{0.321 GPa}{0.00155}\\E = 207 GPa[/tex]