An electronic temperature probe is the ideal tool for measuring water temperature along a river.
Electronic temperature probe would be the most practical tool for the scientist to use to measure the temperature of the water every 5 meters along the river. Electronic temperature probes are accurate, efficient, and can easily provide continuous temperature readings.
Mercury thermometer could also be used as a traditional method to measure water temperature, but electronic temperature probes offer more convenience and precision.
Using an electronic temperature probe allows the scientist to gather data efficiently and accurately along the 3 km stretch of the river.
https://brainly.com/question/50765603