@General T. Winters (29 May, 2015, 1:43 PM UTC):
There's a fork...

But my final answer is C; Super Conductors.

One could argue that C and D are odd, since they are the only technologies for Artillery and Infantry, respectively.

But I think Super Conductors is more odd since it is the only one that does not require ProtoCrystals to unlock, and does not directly contribute to building BioPlasma units...

It's also the only one to directly unlock a building for you.

Edit 1:
It should also be noted Super Conductors isn't on the same row as the other technologies...

C  (superconductors).  Because it's orange. 

And of course also because it's the only one that doesn't take protocrystals to unlock, and the only one that isn't for a unit that costs bioplasma to build.  

The answer is super conductors because it is not in the same section as the rest and because you don't buy it with proto crystals

Commanders, you are attentive ones. Maybe I should think over more complicated questions. Right?

@General T. Winters (5 June, 2015, 9:21 AM UTC):
Yes...

Like what's the default offence powers of a Battlecruiser to a Fighter? (7:6, btw)

Or how much SDB does BiohazarD have   lol

@Rajeev Sudoku (23 December, 2015, 11:10 PM UTC):
One could argue that we do; The Nightmare Scout.

But yes, I agree we should have designated offence/defence BioPlasma-based Air units, along with a defensive BioPlasma-based Artillery unit

I have passed this suggestion on to our General.