Answer:
A.Synthesis
Explanation:
Let's consider the following unbalanced reaction.
P + O₂ ⇒ P₄O₁₀
To get the balanced equation, so that the equation follows the law of conservation of matter, we will need to multiply P by 4 and O₂ by 5.
4 P + 5 O₂ ⇒ P₄O₁₀
This kind of reaction is known as a synthesis reaction, in which 2 simple substances combine to form a compound (P₄O₁₀).
