Which of the following is linked to an increse in brain size and intellegence in hominids a) increased speed and strength
b)development of more complex and tools and language
c)increased social interactions
d) decreased use of tools and laguage

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

high growth (apex)

i would think a oil tanker that has leaked in a bay