External links may provide incentives to:OptionsAttend business exhibitionsRaise financeIntroduce improvements to productsIntroduce new working practices

The question seems to be asking which of the given options can be incentivized by external links. However, without more context, it's a bit difficult to provide a definitive answer. Here's a general interpretation:

1. Attend business exhibitions: External links could potentially provide incentives to attend business exhibitions. For example, a link could lead to a site that offers discounted tickets or exclusive access to certain exhibitions.

2. Raise finance: External links could lead to crowdfunding platforms, investment sites, or other resources that could help a business raise finance.

3. Introduce improvements to products: External links could lead to customer feedback, reviews, or other forms of market research that could incentivize a business to improve their products.

4. Introduce new working practices: External links could lead to resources, articles, or studies about effective working practices. This could incentivize a business to introduce new working practices.

Without more context, it's hard to say which of these options is the most likely answer. It could potentially be any of them, depending on the specific situation.