The list includes six situations. • A book sliding across a table at a constant speed
• A ball sitting on a shelf
• A can rolling down a ramp
• A swing moving back and forth
A car traveling at a constant speed of 15 m/s
• A bird landing on a branch
Which objects in the list experience an unbalanced force?
O A. The book, the ball, and the car
B. The ball, the car, and the bird
O C. The can, the swing, and the bird
D. The book, the ball, the can, and the swing
Look

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

correct answer: false

while planning water activities, it is very important to consider the weather, because if we do not plan and are going for a surf, then it might be that the hurricane came and drown us or may carry us to long distance from where we can not come back. there are many reasons to take information about the weather when we are planning any water activities.

hence, the correct answer would be false.