1) Animals that have lower mass-specific metabolic rates are generally:

a.     Large and endergonic

b.     Small and short-lived

c.     Small and endothermic

d.     Large and long-lived

e.     Small and ectothermic

 

a.     Large and endothermic

Step-by-step explanation

• Smaller endothermic animal having a higher Basal Metabolic Rate.
• Smaller animals have a large surface area to volume ratio. They lose a lot of heat to the environment hence higher Basal metabolic rate to replace the lost heat.
• Larger endothermic animals have a lower Basal Metabolic rate because they have a smaller surface area to volume ratio hence lose less heat to the environment.