Question $1($Mandatory$)(1$ point$)$

If your heart rate is $120$ beats per minute during strenuous exercise, what is the period of a single heart beat in units of seconds?

a$)0\mathrm{.}40s$

b$)0\mathrm{.}50s$

c$)0\mathrm{.}60s$

d$)2\mathrm{.}00s$