Explanation:
Physical antagonists.
Chemical antagonists.
Physiological antagonists.
Pharmacological antagonists.
Allosteric antagonists
Your answer is the nuclear envelope, The nuclear envelope is a double membrane of the nucleus that encloses the genetic material. It separates the contents of the nucleus from the cytoplasm.
A is Skipping
B Is Walking
C is Surfing
D is Gardening
Hope that what ya wante,. Good Day mate