Question

q6 the steps in a scientific investigation must include laboratory experiments. begin with a good hypothesis. include the development of a theory. be performed in a logical sequence.

Explanation:

Scientific investigations don't always require lab - experiments, a hypothesis can be formulated later, and theory development is a later stage. But they must follow a logical sequence like making observations, forming a hypothesis, testing it, etc.

Answer:

D. be performed in a logical sequence