Kallie wants to improve her tennis serve. she already practices every day the court is available, and her technique and energy output are outstanding. kallie should focus on a) frequency; performing more cardio-related workouts b) intensity; increasing the effort expended during her workout c) time; increasing the length of her workout d)type; performing a different activity to achieve her goal

Kallie should focus on the type; performing a different activity to achieve her goal (Option D)

Explanation: As Kallie is already giving a lot of time in practicing and her technique and energy output are outstanding, so her frequency, intensity and time in the FITT cycle are being completed.

The FITT cycle includes:

Frequency is the number of times she practices

Intensity denotes the level of difficulty  

Time is the duration of the session  

Type is the training activity that is being performed

Kallie should focus on the type of activity she is performing. She should change it and see if it would make her tennis serve better.  

i think life is life. many could argue that life is ‘nice’ or ‘fun’ but in the end, it is immaterial and will end. nihilism is my philosophy. nothing matters in the end so why make an effort?