"plantlike photosynthesis that releases oxygen (o2) occurs in "

The right answer is cyanobacteria.

Cyanobacteria are a division of Gram-negative aquatic bacteria capable of photosynthesis. About two-thirds of the species studied are capable of stabilizing nitrogen and are therefore involved in the nitrogen cycle in the biosphere.

These cyanophytes contain three pigments, green, blue and red.

one centimetre is equal to 0.01 metres

correct answer is a. and d.