Answer:
A) Light is made up of waves.
Explanation:
Light is a form of electromagnetic waves.
Electromagnetic waves consist of electric and magnetic fields that oscillate periodically in a plane perpendicular to the direction of motion of the wave, therefore they are transverse in nature.
All electromagnetic waves travel in a vacuum at the speed of light:

Moreover, electromagnetic waves are classified into 7 different types depending on their frequency and wavelength. From lowest to highest frequency (and so, from longest to shortest wavelength), we have:
Radio waves
Microwaves
Ultraviolet
Visible light
Infrared
X-rays
Gamma rays
Visible light is part of this electromagnetic spectrum, and corresponds to the part of the electromagnetic waves that our eye is able to see. In particular, we perceive waves of different wavelength and frequency as different colors: for instance, violet/blue light corresponds to the shortest wavelength that we can see, while red light corresponds to the longest wavelength that we are able to see.
Also, for visible light wave we can describe their brightness, which corresponds to the intensity of the wave, which is a property of all waves.
So the correct answer is
A) Light is made up of waves
Physical hunger shows itself with physical feelings of emptiness in your stomach, rumbling accompanied by weakness. Psychological hunger is simply the desire to eat, accompanied by no physical proof that it is necessary at that moment.
Answer: See explanation
Explanation:
Marginal analysis are applied by the consumers when they make decisions and this simply means that when making a decision, they look at the marginal benefit and the marginal cost and then make a comparison.
In this scenario, rides will be allocated based on time costs that have been incurred as the individuals who have time and can wait longer or like a particular ride or those will wait till they have their preferred ride. On the other hand, the individuals who doesn't have much time will be willing to take another ride even if it's not what they really like.
This relates to demand and supply because increase in demand for a particular product will lead to lesser supply and will lead to few people getting what they want as there'll be scarcity or increase in the price for that product. In such cases, consumers may go to the substitute of that particular product.