At metaphase, chromosomes are attached to the spindle fibres by their

Kinetochores

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Centromere

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Satellites

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Secondary constrictions

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Solution

The correct option is A Kinetochores
Spindle fibers are the threadlike structure which is made up of microtubules. These originate from the centrioles during cell division and helps in the movement of chromosomes towards the pole. During metaphase, each chromosome gets attached to two spindle fibres, one from each pole, in the region of its kinetochores.
So, the correct answer is option A.

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