Which stain removing solution works best to remove spaghetti sauce on white t-shirt pieces?

An Investigation into the Influence of Gender and Age on Taste Function in Sweet Items
The effect of type of movie watched on the amount of sleep
Improving Paracetamol Solubility Across Brand and Water Temperature.
Can a coin flip be biased? Exploring the effects of wetting on a coin flip.

Other Example Project Titles:
Taste test: is spaghetti sauce A or B more tasty to students?
Is balsa wood less elastic after it has been immersed in water?
Which stain removing solution works best to remove spaghetti sauce on white t-shirt pieces?
What is the electrical resistance of water vs. salt water?
Time to mould of bread pieces after exposure to hands with different hand washing treatments
Comparisons of different exercise strategies on heart rate
Effects of music on typing speed (e.g. using https://typing-speed-test.aoeu.eu)
Effects of music on reaction time (using a web reaction time tester)
Do women have quicker reactions than men on reaction-time tester
Is amount of sleep impacted by blue light exposure before bed?
Is amount of sleep impacted by type of movie watched?
Does type of music impact my exercise performance?
Can different breathing exercises lower post-exercise heart rate faster?
Popcorn brand yield comparison
Carpet textures’ effects on marbles’ rolling distances
How many eggs make the most tasty cupcakes for a given flour / butter ratio?
How much butter makes the most tasty cupcakes for a given flour / egg ratio
Comparison of Dissolve Times of Name Brand and Generic Brand asprin
Which Python or R library is the fastest at reading CSV files?
Does having people put their names on a questionnaire with sensitive questions leads to different
responses?