B. The observers up front were asked to sit down so that the ones in the back could see. When you are talking about people, you use sit, not set.
Answer: Hewo, there! your Answer Is below
1. the action or process of observing something or someone carefully or in order to gain information.
2. two types of observations, qualitative and quantitative. Qualitative observations are made when you use your senses to observe the results. (Sight, smell, touch, taste and hear.) Quantitative observations are made with instruments such as rulers, balances, graduated cylinders, beakers, and thermometers. These results are measurable.
Observation is essential in science. Scientists use observation to collect and record data, which enables them to construct and then test hypotheses and theories. Scientists observe in many ways – with their own senses or with tools such as microscopes, scanners or transmitters to extend their vision or hearing.
Explanation:
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The first one goes to the second one the second one goes to the first one and the third one goes to number three in the fourth one goes to the fourth box you’re welcome
