Correct option is A
Option (a) is the correct antonym of the given word.
Neglect refers to the act of failing to care for or pay attention to something or someone properly.
Synonyms: disregard, ignore, overlook, abandon.
Antonyms: attend to, care for, nurture, prioritize, remember.
Meanings of all options-
Remember: To retain and recall information or experiences in one's memory.
Slight: To show a lack of respect or attention to someone or something; to treat as unimportant.
Omit: To leave out or exclude something, usually intentionally, from a list, statement, or action.
Overlook: To fail to notice or see something; to neglect or miss something.