Why should you change up your exercise routine?

In general, to avoid adaptation, you should change exercises once every 3-5 weeks. Make a list of exercises for each body part and simply pick a new exercise every 3-5 weeks. This will go a long way in helping you make
consistent progress.

Found this in the web, hope it helped a little, based on my experience, I feel like we should change it because if we stay on the same routine, we might not see progress

Ibelieve it's choice d.

The fetus at this stage is curled up, almost doubled over, so remember to consider this as you draw the fetus the correct length