Explanation
The word that does not fit in with the others is D: Gold.
The other three options are all types of currency, whereas gold is a precious metal that is often used as a store of value or for decorative purposes.
A peso is the currency of several Latin American countries, including Mexico, Argentina, and Colombia.
A dinar is the currency of several countries in the Middle East and North Africa, such as Iraq, Jordan, and Tunisia.
A euro is the currency used by many countries in the European Union, such as Germany, France, and Italy.
Therefore, the correct answer is D: Gold.
