Correct option is B
To analyze the statement "Please do not use medicines during pregnancy" and the assumptions:
Assumption 1: Use of medicine will cause problems during pregnancy.
This assumption is implicit because the advice not to use medicines suggests that there may be harmful effects associated with their use during pregnancy.
Assumption 2: Medicines taken during pregnancy are very costly.
This assumption is not implicit in the statement. The advice does not mention cost as a reason to avoid medicines.
Based on this analysis, the correct answer is: (b) Only assumption 1 is implicit.