Which word describes a strong emotional commitment to a cause?

The word that best describes a strong emotional commitment to a cause is "loyal." Being loyal indicates a deep sense of devotion and steadfastness toward someone or something, often signifying unwavering support despite challenges or changes. This emotional dedication is crucial in contexts where individuals advocate passionately for beliefs, organizations, or causes, reflecting a consistent alignment with their values and principles.

The other choices do not convey the same meaning. "Fickle" suggests a lack of permanence, indicating someone who changes their mind or loyalty frequently. "Innate" refers to qualities or characteristics that are natural or inherent, not necessarily linked to commitment. "Bedevil" means to cause trouble or torment, which contrasts sharply with the idea of loyalty and emotional commitment.