Mycorrhiza represents

The sea anemone and the clown fish are an excellent example of which of the following?

Select the odd one out regarding population interactions.

Given below are two statements:
Statement $I:$ Gause's 'Competitive Exclusion Principle' states that two closely related species competing for the same resources cannot co-exist indefinitely and the competitively inferior one will be eliminated eventually.
Statement $II:$ In general,carnivores are more adversely affected by competition than herbivores.
In the light of the above statements,choose the correct answer from the options given below:

Choose the correct group for commensalism from the following:
$(a)$ The cattle egret and grazing cattle
$(b)$ Barnacle balanus and Barnacle chathamalus
$(c)$ Goat and Abingdon turtle from Galapagos island
$(d)$ Barnacles growing on the back of whale

What is the interaction between two species called?