Scientific investigation is defined as analysis and research carried out through scientific method on a particular subject. Viewing and recognizing question is the first step to start investigation. Observation and testing is carried out later to produce result of investigation.
Other options are incorrect because hypothesis formation, outcome, argument preparation and finding participant involved is reach are not the initial start of scientific investigation. Thus, the correct option is option(b)
If im correct to me "stay positive" means to have a happy optimistic and overall good attitude to whatever or whoever it may be refering too. "Keep going" in this sentence just means to continue to proceed forward or carry on.
