If the radius of an air molecule were twice as large, how would d, the mean free path of an electron in air, change? (A) d would be the same. (B) d would be twice as long. (C) d would be half as long....

If the radius of an air molecule were twice as large, how would d, the mean free path of an electron in air, change?

(A) d would be the same.

(B) d would be twice as long.

(C) d would be half as long.

(D) d would be 1/4 as long.

(E) d would be 4 times as long.