Substances which will glow in the dark after being exposed to sunlight are called :

Answer:
D. / 4 - Phosphorescents
Explanation:
Phosphorescence occurs when light is absorved by a material, and when the material is in the dark we can see how radiation is emitted from the object, in the form of light. Phosphorescent materials are called phosphorescents.
Facts/notes:
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BiologiaMagister