Select the appropriate antonym for the underlined word.

The arms and legs lay in a careless way.

vigilant

The correct answer is option 1. vigilant.

In the given sentence, the word "careless" is used to describe the way the arms and legs are positioned. "Careless" suggests a lack of attention or consideration, implying that the arms and legs are not arranged in a careful or deliberate manner.

The antonym "vigilant" means being watchful, attentive, or cautious. So, if the arms and legs were arranged in a vigilant manner, it would imply that they were placed with care and attention to detail.

Therefore, "vigilant" is the appropriate antonym for "careless" in this context, as it represents the opposite quality of being attentive and careful.