Question

select the sentence in this passage that can be classified as a false statement.
although few humans per year are attacked by polar bears, any individual attack can be terrifying and even fatal. the warming of arctic regions has allowed the intrusion of humans into the polar bears habitat, increasing the danger of harmful contacts. remaining alert and using precautions can help humans avoid a negative encounter with a polar bear. traveling together and staying close to the group can help humans avoid bear attacks. certain weapons, including nonlethal ones such as pepper spray, are effective against polar bears. once a bear has decided to attack, however, nothing can be done.

Explanation:

To determine the false statement, we analyze each sentence:

• The first sentence about polar bear attacks being terrifying/fatal is consistent with knowledge.
• The second about Arctic warming increasing human - polar bear contact is reasonable.
• The third about alertness/precautions helping avoid negative encounters makes sense.
• The fourth about traveling in groups helping avoid attacks is a valid safety measure.
• The fifth about certain weapons (like pepper spray) being effective against polar bears is generally accepted.
• The last sentence “Once a bear has decided to attack, however, nothing can be done” is false. There are actions (like using weapons, fighting back in some cases) that can be taken even when a polar bear attacks, and the previous sentences also imply that precautions/weapons can be effective, which contradicts this statement.

Answer:

Once a bear has decided to attack, however, nothing can be done.