The claim of any passage will be the topic or main idea of the writer. The writer's main arguments that are presented to support the passage will be the claims of the given passage.
In the given passage about animal welfare, Bruno talks about the need for people to be more protective of the animals and think of their safety and welfare. By arguing for the people to do their bit to help animals however they can, and even providing the numbers or statistics to support his argument, Bruno makes his point to encourage people to think of animals and their welfare.
Thus, the correct answer is the fourth/ last option.
