The strategy to answer this question is you would use information from both reading the passage and the lecture. You can start by saying the general concept in both the passage and the listening .Candidate could start by comparing the listening and the passage. Plus, the candidate can say about the behavior of the horse. It is also possile to contrast the horses behaviour with that of antelopes which are territorial. In this task candidates you do not have to summarize everything from the passage and the listening but to give information about the two that even if a person that did not read the passage or listened to it would understand what you will say .
Sample Answer:
Herd animals are easily domesticated if they have a hierarchical social structure and are not territorial and that is why it is easier to domesticate horses that antelopes. The behavior of horses, their hierarchical social structure makes them willing to follow one another and thus allows a human being act as their leader. And also because horses are territorial they can be harnessed together without fighting. Unlike horses, male antelopes fight if they are together, and that because antelopes do not have special hierarchy, humans can’t control them by acting as their leader.