The transformer oil should have _____ volatility and _____ viscosity.

The correct answer is: C. low, high.

Volatility is a measure of how easily a liquid vaporizes. A low-volatility liquid will vaporize more slowly than a high-volatility liquid. This is important for transformer oil because it helps to prevent the oil from boiling away and causing damage to the transformer.

Viscosity is a measure of how thick or thin a liquid is. A high-viscosity liquid is thicker than a low-viscosity liquid. This is important for transformer oil because it helps to keep the oil from flowing too easily and causing damage to the transformer.

In conclusion, the transformer oil should have a low volatility and a high viscosity. This will help to prevent the oil from boiling away and causing damage to the transformer, and it will also help to keep the oil from flowing too easily and causing damage to the transformer.

Here is a brief explanation of each option:

• Option A: low, low. This would not be a good choice for transformer oil because it would allow the oil to vaporize too easily and cause damage to the transformer.
• Option B: high, high. This would also not be a good choice for transformer oil because it would make the oil too thick and cause damage to the transformer.
• Option C: low, high. This is the best choice for transformer oil because it will help to prevent the oil from boiling away and causing damage to the transformer, and it will also help to keep the oil from flowing too easily and causing damage to the transformer.
• Option D: high, low. This would not be a good choice for transformer oil because it would make the oil too thin and cause damage to the transformer.