Why should the ureter be less robust than the vas deferens

The vas deferens, also called ductus deferens, is part of the male reproductive system of many vertebrates; these ducts transport sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation. It is a partially coiled tube which exits the abdominal cavity through the inguinal canal.

Explanation:

the correct answer was location c, because earth is tilted away from the sun at this time

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