_____ Finance Minister increased ______ tax on ______ petrol in his last budget ?

In the sentence "_____ Finance Minister increased ______ tax on ______ petrol in his last budget," the correct choice is "The / the / _," which fits grammatically and contextually.

1. Definite Article "The": The phrase "The Finance Minister" refers to a specific individual who holds that position, thus necessitating the definite article "The." It denotes the unique nature of the role within a given context, usually tied to a particular country or government.

2. Tax on: In the phrase "the tax," the definite article "the" is also appropriate because it implies a specific tax. This indicates that the reader or listener is already aware of which tax is being discussed, providing clarity and specificity.

3. Petrol: The absence of an article before "petrol" suggests that the sentence refers to petrol in general, rather than a specific brand or type of petrol. In English, we commonly omit articles when discussing substances or materials in a general sense.

Thus, "The / the / _" appropriately combines definitive references where needed and remains generic where applicable, ensuring that the original meaning and clarity of the sentence are preserved. Other options would either be grammatically incorrect or lack clarity.