Every year, the Spanish town of Buñol holds a festival in which people throw which type of food at each other?

Introduction / Context:
Cultural festivals around the world are popular topics in general knowledge and world geography examinations. Spain hosts several colourful events, and one of the most famous is a large food throwing festival held in the town of Buñol. Many students may have seen pictures or videos of the streets filled with red pulp as people throw food at each other for fun. This question asks you to recall which specific type of food is used in that festival.

Given Data / Assumptions:
- The question refers to an annual festival in Buñol, a town in Spain.
- Participants throw some type of food at each other as part of the event.
- The options include grapes, oranges, tomatoes, bread rolls, and olives.
- We assume awareness of famous Spanish festivals mentioned in news and exam guides.

Concept / Approach:
The festival in question is La Tomatina, a well known event in Buñol where thousands of participants engage in a massive tomato fight. Trucks bring overripe tomatoes into the town square, and people throw them for a set period, covering the streets in red pulp. Grapes are associated with wine making, oranges with other Spanish regions, and olives with Mediterranean cuisine, but Buñol is specifically linked with the tomato throwing festival. Therefore, tomatoes are the correct answer.

Step-by-Step Solution:
Step 1: Recognise that Buñol is famous for La Tomatina, a unique tomato throwing festival. Step 2: Recall images or descriptions of people covered in red tomato pulp during the event. Step 3: Compare this with the other food items in the options, none of which match the widely known festival. Step 4: Identify tomatoes as the food thrown at La Tomatina in Buñol. Step 5: Choose Tomatoes as the correct option.

Verification / Alternative check:
Verification is simple if you remember the name La Tomatina, which itself contains the word that sounds like tomato. News reports and travel programmes often highlight this festival, showing how overripe tomatoes are used so that they do not cause injuries. The event is carefully timed and supervised by the local authorities in Buñol. None of the other listed foods are mentioned in connection with this festival in standard references, confirming that tomatoes are the correct answer.

Why Other Options Are Wrong:
Grapes: This is incorrect because grapes are more closely associated with wine making festivals, not with the Buñol food fight.
Oranges: This is incorrect because oranges are linked to various Spanish regions but not to the specific festival in Buñol described in the question.
Bread rolls: This is incorrect because bread is not the featured food in La Tomatina.
Olives: This is incorrect because olives are an important Mediterranean crop but are not thrown at this particular festival.

Common Pitfalls:
Some students may vaguely recall a food festival in Spain and guess grapes or oranges due to general associations with Spanish agriculture. The key is to link the word La Tomatina with tomatoes and with the bright red images often shown in media. Remember that Buñol is specifically connected with tomatoes and that this festival has become a symbol of Spanish festive culture in many general knowledge books.

Final Answer:
During the annual festival in Buñol, participants throw tomatoes at each other.