Questions Pertain to the Following Table (Table 7), Which Presents

Questions pertain to the following table (Table 7) , which presents fictitious results regarding the effects of guided imagery on pain outcomes among patients with cancer.
$\begin{array}{c}\text { Table 7 } \\\text { Physiologic Outcomes for Patients with Emphysema during Exercise Performance } \\\text { Under Three Different Conditions (N= 50) } \\\begin{array}{|l|c|c|c|c|c|}\hline \text { Physiologic Outcome } & \begin{array}{c}\text { Control } \\\text { Condition }\\\\\text { Mean } \pm S D\end{array} & \begin{array}{c}\text { With Admin- } \\\text { istration of } \\\text { Oxygen } \\\text { Mean } \pm S D\end{array} & \begin{array}{c}\text { With } \\\text { Compressed } \\\text { Air } \\\text { Mean } \pm S D\end{array} & \boldsymbol{F} & \boldsymbol{p} \\\hline \text { Dyspnean rating }(1-10) & 4.70 \pm 2.3 & 4.77 \pm 2.6 & 5.09 \pm 2.6 & 4.99 & .008 \\\hline \text { Heart rate (bpm) } & 121.1 \pm 13.6 & 126.9 \pm 19.9 & 126.0 \pm 21.1 & 12.54 & <.001 \\\hline \text { Oxygen saturation, } \mathrm{SPO}_{2}(\%) & 91.0 \pm 3.9 & 94.4 \pm 4.0 & 89.9 \pm 4.1 & 9.80 & <.001 \\\hline \text { Breaths per minute } & 24.1 \pm 4.8 & 24.3 \pm 5.9 & 28.8 \pm 6.5 & 1.86 & .22 \\\hline\end{array}\end{array}$
-Refer to Table 7. For which outcome would the researcher need to accept the null hypothesis?

A) Dyspnea rating
B) Heart rate
C) Oxygen saturation
D) Breaths per minute