Final answer:
The words 'truancy' and 'zealot' carry negative connotations, with 'truancy' referring to unexcused absences from school and 'zealot' describing fanatical behavior. In contrast, 'phenomenon' and 'sustain' are neutral, with the former referring to observable events and the latter to maintaining support.
Step-by-step explanation:
When considering the connotations of the given words, it's important to distinguish their emotional associations outside of their literal meanings. The word phenomenon typically carries a neutral connotation, simply referring to an event or situation that can be observed, often one that is extraordinary or remarkable. Sustain also has neutral or potentially positive connotations, as it refers to the ability to maintain or support something over time.
On the other hand, the word truancy carries a negative connotation as it refers to the act of staying away from school without good reasons, which is generally frowned upon. Likewise, the word zealot often has a negative connotation as it describes a person who is fanatical and uncompromising in pursuit of their religious, political, or other ideals, which can suggest extremism or intolerance.