The correct option is A Ramapithecus
Ramapithecus was the earliest man-like primate who probably walked on their legs. They lived in Africa, Hungary, Greece about 8−15 million years ago. They are primitive human ancestors.
Australopithecus were more human-like below the neck and ape-like above the neck. They lived in Africa about 1−4 million years ago.
Homo habilis lived in Africa 2−2.5 million years ago.
Homo neanderthalensis lived in Central Asia and East Asia around 40,000−1,00000 years ago.
Hence the correct option is
a. Ramapithecus