Here are the answers to the questions:
1. B. Agriculture
Physics, Chemistry, and Biology are considered pure science fields. Agriculture is an applied science because it uses scientific principles to solve practical problems related to farming and food production.
2. C. Impatience
Honesty, creativity, and curiosity are all valuable and necessary attitudes for a scientist. Impatience, however, can hinder the careful observation, meticulous experimentation, and thorough analysis required in scientific work.
3. C. Relative density of a substance
A hydrometer is an instrument specifically designed to measure the relative density (or specific gravity) of liquids.
4. D. Reasonable guess to the solution
A hypothesis is a testable explanation or an educated guess about an observation or problem. It serves as a starting point for further investigation and experimentation.
5. All of the listed options are steps in the scientific method:
A. Observation to identify problem is the initial step where a phenomenon is noticed, and a question arises.
B. Formulating hypothesis involves proposing a testable explanation for the observed problem.
C. Conducting experiment is the process of testing the hypothesis through controlled procedures.