Get to school and learn boi
Answer:
Explanation:
Given
length of wire 
change in length 
mass of wire 
Young's modulus for silver 
load on wire 

change in length is given by

Where A=area of cross-section




also wire is the shape of cylinder so cross-section is given by





<span>1 cal = 4,185 J
1 kcal = 1*10^3 cal
or
=1000 cal</span>
I believe it’s B. Electrons