The skeleton of homo erectus:
a. is more apelike (more similar to a chimp or gorilla) than human
b. is adapted for walking differently than modern man (more like gorilla knuckle-walking)
c. is adapted for walking almost identically to the way modern humans walk
d. is radically different from modern humans

The correct option is : c. is adapted for walking almost identically to the way modern humans walk

Explanation:

The species Homo erectus belongs to the category of archaic humans. The first fossil of a Homo erectus was discovered in Dmanisi, Georgia and it dates to 1.8 million years ago.

New foot tracks of the Homo erectus were discovered in Kenya in 2009. This discovery confirmed that the gait or the manner of walking of the Homo erectus was heel-to-toe. Therefore, the Homo erectus were adapted to walking more like the modern humans.

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!