Refer to the picture below. this is an example of:

select one:
a. homologous structures
b. vestigial structures
c. sequential structures
d. analogous structures

The answer is a. homologous structures

Explanation:

Homologous Structures:

Structures that have similar anatomy or similar structure but have different functions are called homologous structures.

These structures indicate shared ancestry between the animals in question. This means that the structures may be used for different functions but they are encoded by same or similar genes.

The bones in the picture perform quite different functions and they might look different from the outside but as we look closer, the bone structure and joints are similar. This shows that all of these animals evolved from a common ancestor.

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do