Correct Option (B)
The passage explicitly states, "Females are protective of their cubs but tend to ignore family rivalry over food." This indicates that while the mother ensures the general safety of her cubs, she does not intervene in their competition for food. Therefore, the cubs are left to compete among themselves for sustenance, effectively fending for themselves in matters of food distribution.
Incorrect Options:
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Option 1 (takes sides over cubs): The passage directly contradicts this by stating that the mother tends to "ignore family rivalry over food," implying a neutral stance rather than taking sides.
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Option 3 (feeds only their favourites): The text provides no evidence to suggest preferential treatment or feeding by the mother. Instead, it highlights that "the most persistent stands to gain an extra meal," indicating that access to food is determined by cub behaviour rather than maternal favouritism.
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Option 4 (sees that all cubs get an equal share): This option is disproven by the statement, "The smallest 'of the litter forfeits many meals to stronger siblings." This clearly demonstrates an unequal distribution of food based on cub strength, without any intervention from the mother to ensure equality.