Easy question. answer should include explanation.

8. A. Its size

None of the other options would change as a result of just cutting a cork into smaller pieces

9. A. The luggage will be lighter to carry

The weight of water can add up very quickly so when you remove almost 90% of water from a substance, you can substantially decrease the weight

10. A. behind him

The sun is shining on his back so his shadow is in front of him, but if he were to turn around his shadow would still be in the same place in relation to his body

if you listed your answers right then i believe your answer is b.