They love each other by showing that they care for one another.
The best and most correct answer among the choices provided by the question is the fourth choice "this is an example of causation"
Causation<span> is the "causal relationship between conduct and result". That is to say that</span>causation<span> provides a means of connecting conduct with a resulting effect, typically an injury.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
This is heavily disputed, and honestly, it varies on a person-by-person basis. Some people are visual learners (so it's effective for them to use videos and pictures to help them study), some prefer being hands-on, etc...
Generally though, I'd say the most effective method that works for most people is through visceralisation. This is the process of associating concepts, words. phrases etc. with your different senses (sound, touch, images...). You can read up more on it by searching up "visceralisation for studying".