[Q]: Which of the following solutions is better for the following goal:
How to get seedlings plenty of light?

[A]: A grow lamp will give your seedling plenty of light and get your plants growing.

[Q]: Which of the following solutions is better for the following goal:
How do you line of the position of the brackets for a retractable window awning?

[A]: Measure where you want them, then stretch out a chalk line and snap it to mark the position.

[Q]: Which of the following solutions is better for the following goal:
Proper grit for sanding bumps on walls?

[A]: Depends a little on the bump. For fine finishing use 200 or 360 grit. If you need a quick flattening of some really rough edges, you can use a higher grit, but then finish with a 200 or so grit for a really nice finish.

[Q]: Which of the following solutions is better for the following goal:
To cover a violet in egg white

[A]:
Beat the egg white in a small bowl with a whisk until foamy. Dip a paintbrush into the egg white and paint the violet's leaves