in order to observe your crystals as they grow, you...\nuse your estimation skills to make general…
in order to observe your crystals as they grow, you...\nuse your estimation skills to make general observations.\nuse your intuition.\nuse your five senses.\nuse your four senses.
Answer
Brief Explanations:
To observe crystals growing, one uses the five senses (sight to see their shape and color, touch to feel texture if possible etc.). Estimation skills are more for numerical - related approximations, intuition is more of a gut - feeling and not a reliable scientific observation method, and we have five senses for general observation in science, not four.
Answer:
use your five senses.