All of the statements you provided about light are true:
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Visible light is part of the electromagnetic spectrum - True. Visible light is the portion of the electromagnetic spectrum that is visible to the human eye.
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Light travels in straight lines - True. Under normal conditions, light travels in straight lines, which is a fundamental principle of geometrical optics.
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Light is a form of energy - True. Light is indeed a form of energy, often referred to as electromagnetic radiation.
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Light travels in waves - True. Light exhibits wave-like properties, as demonstrated by phenomena such as interference and diffraction.
Thus, all the statements listed are true.