By understanding the meaning of the words.
Sow means planting. " I sow the seeds in the soil".
Sew means to stitch. "She sews her seams sweetly and neatly".
A soda ban should be put in place, due to the fact it is the leading cause of obesity in the United States.
(I don't support a soda ban btw)
D.) a dependent clause.
Because the underlined portion cannot stand on its own as a sentence, it is considered a dependent clause.