Research illustrate that happiness seekers are likely to be A)/ unsuccessful when practices like gratitude or kindness elicit negative B)/, rather than positive, emotions, thoughts, and behavioral, C) /or when they reduce, rather than boost, D)/ a sense of connectedness, competence, or control. E)
- No error
The sentence is talking about research so illustrates will be used. In D by the rule of sentence parallelism behaviors is used instead of behavioral.