Which of the following will not affect homeostasis in a multicellular organism

A: amount of light present

B: external temperature

C: both a and b

D: none of the above

Answer: C

Homeostasis, when an organism maintains a stable and internal system, also increasing the external temperature, this causes change in the environment.

The correct answer is option D (none of the above).

Explanation:

Homeostasis is the ability of an organism to regulate its internal stability while adjusting to the environment for functioning and survival. This is a defining feature of an organism.

1. The body temperature of organisms is an example of homeostasis like humans which maintains its temperature at 37 °C (98.6 °F) but it can be affected by various factors like exposure to high and low temperature, diseases.

2. The body temperature of cold blooded animals fluctuate in response to temperature of environment but they maintain their body temperature by moving in sunlight to warm their bodies during winter and and by hiding themselves form sunlight during summer.

Thus, option D is the correct answer.