What do you understand by gravitational lensing?
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When Earth's gravity acts as the telescope's lens.
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When gravity interrupts the telescope's imaging.
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When the light from a very distant galaxy or quasar gets "bent" around a massive object like a group or cluster of galaxies which acts like a lens.
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Light from the visible universe seen from Earth due to the Earth's gravity.
Gravitational lensing occurs when a massive object (like a galaxy cluster) bends spacetime, causing light from distant objects to curve around it. The massive object acts as a lens, magnifying and distorting the light from background sources - galaxies or quasars behind it. This effect, predicted by Einstein's General Relativity, has nothing to do with Earth's gravity interrupting telescopes. It's a powerful tool for studying dark matter and distant galaxies. Options A, B, and D incorrectly focus on Earth's gravity rather than massive astronomical objects.