यदि किसी व्यक्ति की नाक से खून बह रहा हो (नकसीर फूटना), तो प्राथमिक उपचार में निम्नलिखित में से क्या नहीं किया जाना चाहिए?

What is the primary first-aid step when an insect stinger remains embedded in the skin after a mild sting?

During first aid, if a victim has a severe, life-threatening external bleed, what is the most important immediate action?

While performing CPR on an adult victim, at what rate should chest compressions be delivered?