Meaning: 'Away' means to remove or eliminate something from a particular place or condition, in this case, the bitter taste from chocolate.

Wrong options:

• out: 'Out' implies a direction or movement from inside to outside, which does not fit the context of removing a taste.
• of: 'Of' is a preposition that indicates belonging or association, but it does not convey the action of removal needed here.
• decision: 'Decision' is a noun referring to a choice made, which does not fit grammatically or contextually as it does not relate to the action of removing taste.

Correct answer: modern

Explanation: The word 'modern' is appropriate as it describes the type of chocolate bar that was created after the removal of the bitter taste. It fits contextually as it indicates something that is contemporary or current, aligning with the historical development of chocolate bars.

Meaning: 'Modern' refers to something that is current or up-to-date, indicating the evolution of chocolate bars into a more palatable form.

Wrong options:

• new: 'New' suggests something that has just been created or introduced, but 'modern' implies a broader context of development over time.
• recent: 'Recent' refers to something that has occurred not long ago, which does not capture the ongoing evolution implied by 'modern.'
• risk: 'Risk' is a noun that refers to the possibility of loss or harm, which is unrelated to the context of describing a type of chocolate bar.

Correct answer: consumers

Explanation: The term 'consumers' is the most fitting as it refers to individuals who purchase and use products, in this case, chocolate. It aligns with the context of discussing chocolate consumption in Britain.

Meaning: 'Consumers' are people who buy and use goods and services, highlighting the role of the British in the chocolate market.

Wrong options:

• users: 'Users' typically refers to individuals who utilize a service or product but does not specifically imply purchasing, making it less suitable here.
• customers: 'Customers' refers to individuals who buy goods, but it is less commonly used in the context of food consumption compared to 'consumers.'
• opportunity: 'Opportunity' is a noun that refers to a favorable circumstance, which does not fit the context of discussing chocolate consumption.

Correct answer: on

Explanation: The preposition 'on' is correctly used here to indicate the expenditure of money for a specific purpose, which is buying chocolate. It fits grammatically and contextually with the phrase 'spend on.'

Meaning: 'On' in this context indicates the purpose of spending, specifically referring to the purchase of chocolate.

Wrong options:

• at: 'At' typically indicates a location or a specific point in time, which does not convey the purpose of spending money.
• with: 'With' suggests accompaniment or association, which does not fit the context of spending money on a product.
• expensive: 'Expensive' is an adjective describing high cost, which does not function grammatically as a preposition in this context.

Correct answer: stock

Explanation: The word 'stock' is appropriate as it refers to the total amount of goods available, which fits the context of chocolate supply in Europe. It aligns with the idea of measuring the quantity of chocolate consumed.

Meaning: 'Stock' refers to the supply of goods available for sale or distribution, indicating the amount of chocolate in Europe.

Wrong options:

• surplus: 'Surplus' implies an excess amount beyond what is needed, which does not accurately describe the general availability of chocolate.
• supply: 'Supply' refers to the total amount available but is less specific than 'stock' in this context, which is more commonly used in retail.
• pollution: 'Pollution' refers to contamination of the environment, which is unrelated to the context of chocolate consumption.

Correct answer: has become

Explanation: The phrase 'has become' is the correct choice as it indicates a change that has occurred over time, fitting the context of chocolate production evolving into a significant business. It uses the present perfect tense to show relevance to the present.

Meaning: 'Has become' indicates a transformation that has taken place, emphasizing the growth of chocolate production as a business.

Wrong options:

• becomes: 'Becomes' is in the simple present tense, which does not convey the completed action of change over time as effectively as 'has become.'
• becoming: 'Becoming' is a gerund that indicates the process of change but does not fit grammatically as a main verb in this context.
• stress: 'Stress' is a noun or verb related to pressure or anxiety, which does not fit the context of discussing the evolution of a business.