To find the average number of heartbeats per second based on the information provided, we first need to determine the total number of heartbeats observed over the given time period.
Assuming that the line representing resting heart rate indicates a steady rate, we need specific values for heartbeats (y-axis) and time (x-axis). Since no exact data are provided in the question, we can still calculate the average based on potential interpretations.
For example, if we consider the maximum number of beats (which seems to be 18 at its peak based on the axis) and if this is observed over a 12-seconds time frame:
- Total heartbeats over the time = (Heartbeat count at its peak * total time)
- Total beats = 18 beats (assuming peak rate over that period)
- Time = 12 seconds
So, the average heartbeats per second can be calculated as follows:
Average heartbeats per second = Total heartbeats / Time = (18 beats / 12 seconds) = 1.5 beats per second.
This answer is not listed in the options.
However, if you separate the average over specific intervals or consider adjustments based on lower heart rates at rest:
- If the average heart rate is lower (like at various points from 0 to 18 evenly spread which is also hypothetical without the actual graph), we could simply average minimally observed beats across the defined times.
Thus, considering the most realistic information without specific details regarding the line's actual path:
If we assume a different average is drawn from 2 beats (lower range could yield such values) at peak or other mixed observations, we might average out:
For simplicity, based on common resting heart rates and provided options, if the line averages at a steady rate that would point toward realistic outputs from 3 more commonly set lower values, leading to clear choice:
Thus, you could select: 2 beats per second or 3 beats per second based on conventionally outlined at an average heart often.
So, without explicit details, I would suggest the most logical choice should align towards either ‘2 beats per second’ or ‘3 beats per second’ as potentially accurate for a graph often representing heart rate averages.
If it’s up to specific rates depicted directly on the graph not being mentioned, please clarify or correct!
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