The answer is B. Developing a plan is a positive step to reach your goals. :)
When doing research, I kept coming across micronase. Therefore, I believe the answer is B.
One example of development/innovation in medicine is certainly the development of anesthesia and hand scrubbing before the procedure for example. While we might think this has been a regular occurence in medicine and surgery forever, we couldn't be more wrong.
Hand scrubbing and anesthesia drastically reduced the complications of certain operations as well as improved outcome rates in surgeries and both have been regularly practiced since the 20h century.
Answer:
I waited at the station for an hour
l have seen a cow grazing in the field
The best bet would be to Put and oxygen mask over his face so he can breath in air.