Sentence Correction (SC) | Re: Often audible as screeching, track friction is created in train

Often audible as screeching, trackfriction is created in train stations from high-temperature metals and carbon dusts, two common railroad waste products, interact with the rail bed.

a. friction is created in train stationsfrom
Use of FROM is idiomatically incorrect. Hence Incorrect
b. friction is created in train stationswhen
CORRECT
c. friction is created in train stations,and when
Use of AND is incorrect
d. friction, created in train stations when
Use of Comma leads to a Fragmented sentence.
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