Note: Question is incomplete i have added full question in ask for detail section.
Answer:
Option a) Velocity increases.
Explanation:
When liquid flow from wider vessel to narrow it follow bernoulli's law. It means the velocity will increase. I have attached picture for better understanding.
Answer: The statement that water becomes denser when it freezes is not a property of water.
B. atoms of a diffrent elements are exactly the same
My answer would be 2:2 for the first one and if they were all girls, assuming none are bald, the ratio would be 4:0. sorry if i’m wrong that’s just how i solved the problem:)