Final answer:
To effectively soften cuticles, hand lotion is the best option as it moisturizes and protects, while nail polish remover contains drying agents like acetone and is not suitable for this purpose.
Step-by-step explanation:
To soften cuticles, the most suitable option is hand lotion. Water can temporarily soften the cuticles, but it is not effective in providing lasting moisture or conditioning. Nail polish remover is not advisable as it typically contains acetone or ethyl acetate, which are solvents that can dry out and harm the cuticles rather than soften them. Vinegar is also not suitable because it does not have any moisturizing properties that benefit cuticles. A hand lotion that contains water, oil, emulsifier, and thickening agent can provide the needed moisture and create a barrier to protect the cuticles, aiding in their softening. Applying hand lotion after washing your hands, particularly after you've made sure to clean under your nails with soap and possibly a brush, can ensure cuticles stay soft and hydrated.