Scientists use all of the above skills
Step-by-step explanation:
The information about the world and its nature is collected and it is learned using the concept called science. The person who learn about the nature by observing and collecting information from it is called as scientists. The skills such as Predicting, observing and Inferring are used by these scientists in their learning process.
The skill observing is related to the usage of the senses of human beings for the purpose of gathering information. The skill inferring refers to the the facts that are determined or calculated from the things that are observed. The skill Prediction refers to the process of determining the things that may occur in future. this may be based on the experience.