When a theory is disproved by further evidence, which of the following occurs?
a.) it should be considered a failure.
b.) it adds to scientific knowledge.
c.) it becomes a law.
d.) new data must be found to support it.

When a theory is disproved by further evidence, then a new data must be found to support it.

As the previous approach to the theory was disproved then new ways should be explored to support it.  If the same core approach would be used to find answers then it may be difficult to get it supported by the theory. There must be new data that has to be developed with logical approach and must be supported by evidence.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.