Perform the required research before your interviewer, and you should find everything you need to effectively answer this question. Here are several examples:

They're rethinking plastic packaging. "There's a lot of plastic pollution in the environment, some with our name on it - and that's not okay with us." They're striving to be a beacon of diversity and inclusion. "We want to help build a fairer, more inclusive society. Our foundation must be an equitable workplace." They're reducing emissions from the use of their products. "Our brands are making big changes to help cut greenhouse gas emissions from the use of our products." They're aiming for zero deforestation. "We're working within our business and with external partners to eliminate deforestation from our supply chain, support human rights and tackle climate change." And they're trying to improve the quality of life of their workforce. "We're helping young people develop the skills they need to find meaningful work. We want to raise living standards by ensuring everyone who directly provides goods and services to Unilever earns a living wage or income."