What is the primary fuel for anaerobic atp production for activities lasting 45-120 seconds?

The correct answer is- muscle glycogen

Explanation:

During the first few seconds of exercise, the stored ATP in the resting muscles are used to provide energy to the body once the ATP is depleted in few seconds then creatine phosphate is used to provide energy.  

ATP and creatine phosphate only provide energy for up to 15 seconds after that the muscle starts anaerobic respiration for providing instant energy because in starting, the rate of respiration is not that much high that instant supply of adequate oxygen can be provided to form ATP.

Therefore muscle switches to anaerobic respiration to form ATP by using glucose of glycogen that is stored in the muscles. It last about 45-120 seconds and after that muscles use aerobic respiration to make ATP.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.