The wire was 35 cm long. The flashlight contained a battery. The plastic switch was better than the metal switch. The bulb was lit for 20 minutes before it burned out.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Kerry made a simple flashlight. She recorded the following statements in her lab book. Which statement is an inference?
Possibilities:
- The wire was 35 cm long.
- The flashlight contained a battery.
- The plastic switch was better than the metal switch.
- The bulb was lit for 20 minutes before it burned out.

The plastic switch was better than the metal switch.