Which of the following would reduce the resistance of a metal wire?
a. increasing its thickness
b. increasing its temperature
c. increasing its length
d. all of the above

b. is incorrect. the correct answer is a.increasing its thickness. i just took a test with this question.

what is the question because that is not a question.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.