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Restate the question in your own words, predict the answer before checking the options, and confirm that the explanation and correct-option field both point to 60 to 100 beats per minute.
e question: The normal heart rate of an adult at rest is In the human body, this option has the required identity, location, function, secretion, deficiency relationship, or disease association. 40 to 60 beats per minute is incorrect because it refers to a different organ, substance, process, or medical association. 100 to 120 beats per minute is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. 120 to 140 beats per minute is incorrect because its function, source, target, or disease relationship does not match the question. Therefore option A, 60 to 100 beats per minute, is factually consistent with the stem, the marked correct index, and the explanation. Normal resting heart rate for adults is 60 to 100 beats per minute.
FAQ
Common questions and clear answers for this topic.
The digestive, circulatory, nervous, and skeletal systems appear most frequently, along with sensory organs and basic endocrine functions.
Yes, the human body has 206 bones, and questions about the largest, smallest, and total bone count appear fairly often.
Questions usually cover blood group compatibility, the role of platelets in clotting, and basic facts about blood pressure and heart function.
No, most questions focus on what each organ does and why, rather than the detailed biochemical processes behind it.
Linking facts to real-life observations, like why pulse is checked at the wrist, makes them easier to recall than memorizing textbook lines.
