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.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.