Work Step by Step
B. is the definition of paracrine signalling, while A. contradicts this definition. C. can be excluded since it talks about direct contact signalling, and D. refers to endocrine signalling.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.