There is no theoretical OR observational evidence for that statement.
Answer:
parallel circuit is a kind of circuits in which all components are connected between the same two sets of electrically common points, creating multiple paths for the current to flow from one end of the battery to the other:

Gravitational Potential Energy of an object is calculated by formula ~

where,
- m = mass of the object = 3500 kg
- g = Acceleration due to gravity = 12 m/s²
- h = height attained by the object = 4 m
Now, let's calculate its potential energy ~
The wavelength of the string is cut in half. The answer is D. The higher the frequency the shorter the wavelength. They are inversely proportional.