B) approval because approval is a synonym of the word consent
(1) 9*4 - 4c = x
(2) 9*2 +2c = x
∴ 36 - 4c = 18 + 2c
18 - 4c = 2c
9 - 2c = c
9 = 3c
c = 3 mph
In physics, energy is the property that must be transferred to an object in order to perform work on – or to heat – the object, and can be converted in form, but not created or destroyed.
