Which of the following are guidelines to follow for obtaining accurate observations? A. Taking careful measurements B. Using vague, boring language C. Making careful sketches D. Making up data to fill in gaps

The guidelines for making good and accurate observations are:

1. Standardise the experimental setup: Know the precision and the accuracy of the instrument used to make observations. Example, thermometer with a least count of 1°C cannot measure in fractional values.

2. Take careful measurements: Holding the instrument properly without causing any disturbance is the key.