The right answer 1st option or " 1400 mL"
Explanation
According to the question
Inspiratory capacity or IC = 3600mL
Vital capacity or VC = 5000mL
We have to calculate the Expiratory reserve Volume or ERV .
according to the formulla
VC=TV+IRV+ERV ...... (1) and
IC= TV+IRV ...... (2)
From ..(2) formulla we can say that
TV=IC-IRV ..... (3)
We put the TV value in formulla ..(1)
VC= IC-IRV+IRV+ERV
VC=IC+ERV
So, ERV = VC-IC
ERV= ( 5000-3600)mL
or,ERV= 1400mL
here TV= Tidal volume
IRV= Inpiratory reserve Volume .
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