A student is preparing for a hike and wants to pick a snack that has macromolecule that provide quickly available energy but few excess calories. Two different snack options are shown below. Snack B because it has the greatest amount of fat, which provides a quick sourc of energy for cells. This snack also has the fewest extra calories.

Snack B because it has a high percentage of carbohydrates, which provide a quick source of energy for cells. This snack also has the fewest extra calories.

Snack A because it has a high percentage of carbohydrates, which provides a quick source of energy for cells. This snack also has the fewest extra calories.

Snack A because it has a high percentage of fat, which provides a quick source of energy for cells. This snack also has the fewest extra calories.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

my answer is the prothallium.brainliest