Practice question

Increased sympathetic activity (C) is the right choice. This sits at the heart of Cardiac Cycle and Regulation: the wording points straight to what is happening in the tissue or organ system. A useful study habit is to ask what the structure or process is for: Increased sympathetic activity is the option that correctly names the structure, process, or principle asked for in Cardiac Cycle and Regulation. That reasoning supports Increased sympathetic activity. One solid sentence about why this works is enough for recall — you do not need a long essay for every MCQ. When you practise, cover the choices first, write Increased sympathetic activity from memory, then reveal the letter — that habit builds real recall for Cardiac Cycle and Regulation.