Scientific theories are often so powerful because they have been tested several time by different peoples and they have been found to be true. A scientific theory is a well substantiated explanation for a specific phenomenon which has undergone many observations and experiments and has stand the test of time. Thus, scientific theories always have to be reckon with because they have been severally tested.
The correct answer is option c. the sensory receptors in the vestibular sacs.
The kinesthetic system is involved in the movement and the balancing of the body. The mechanoreceptors present in the inner ear helps in determining the balance and the maintenance of the postures.
The vestibular sac have utricle and saccule, which help in the detection of the changes in linear acceleration. The semilunar canal present in inner ear respond to angular moments