67The fact that the other parent, where that parent is a Union citizen, is actually able and willing to assume sole responsibility for the primary day-to-day care of the child is a relevant factor, but it is not in itself a sufficient ground for a conclusion that there is not, between the third-country national parent and the child, such a relationship of dependency that the child would be compelled to leave the territory of the European Union if a right of residence were refused to that third-country national. In reaching such a conclusion, account must be taken, in the best interests of the child concerned, of all the specific circumstances, including the age of the child, the child’s physical and emotional development, the extent of his or her emotional ties both to the Union citizen parent and to the third-country national parent, and the risks which separation from the latter might entail for that child’s equilibrium (judgments of 10 May 2017, Chavez-Vilchez and Others, C‑133/15, EU:C:2017:354, paragraph 72, and of 8 May 2018, K. A. and Others (Family reunification in Belgium), C‑82/16, EU:C:2018:308, paragraph 72).
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