Final answer:
A shock that causes burns and muscle contractions in a small part of the body is called a local shock (option c) . The severity of the effects of electrical shock depends on current strength, path, duration, and type of current.
Step-by-step explanation:
A shock that passes through a small part of the body, causing burns and muscle contractions, is known as a local shock. A local shock can have a range of effects depending on the amount of current, the path taken by the current, the duration of the shock, and whether the current is alternating or direct current (AC or DC). Minor shocks might only cause a slight sensation or pain, whereas shocks exceeding 5 mA can cause involuntary muscle contractions.
On the other hand, greater currents, in the range of 100 to 300 mA, can disrupt the heart's electrical patterns leading to ventricular fibrillation, a potentially fatal condition due to irregular and ineffective heartbeats. At about 300 mA and above, the likelihood of burns increases, especially if the current is highly concentrated.