[Q]: Which of the following solutions is better for the following goal:
To remove excess mirror mastic,

[A]: Scrape the excess off with a metal nail file.

[Q]: Which of the following solutions is better for the following goal:
How do I make pasta salad

[A]: Boil the noodles, then add Greek dressing and Parmesan cheese

[Q]: Which of the following solutions is better for the following goal:
make ashtray

[A]: use aluminum foil

[Q]: Which of the following solutions is better for the following goal:
How can I test my fruit to see if it covered with wax or toxins?

[A]:
Take fruit and dunk in boiling water, remove and let dry in the air, you'll be able to see the wax residue as it dries, you can test organic fruit this way also.