Answer:
The answer to your question is: the last option ( 2 mole Fe : 3 mol Cl2)
Explanation:
The mole ratio in a chemical reaction is expressed by the integers before each element, for example if we have
2H2SO4 + 3NaOH,
The mole ratio between, H2SO4 and NaOH is 2H2SO4 : 3 NaOH
In your question, the question is the ratio between Fe and Cl2, so we look at their coefficients and then:
2 mole Fe : 3 mol Cl2