Heat is transmitted in liquids by the process of:
A) Conduction
B) Convection
C) Radiation
D) Both Conduction and Convection

Hint: We know that the heat is transmitted from low temperature to the high temperature. The high temperature body carries heat energy which is then transferred to the low temperature body and this process is named differently for solids, liquids and gasses.

Complete answer:
From the above question, let us take all the options one by one.
Option A: we know that conduction is the process of the heat transmission in the metals or solids via direct molecular collision. Now, in this process heat is transferred as thermal energy from an area of greater kinetic energy to an area with lower kinetic energy. Hence, conduction is not the correct answer for the above question.
Hence, this option is not correct.

Option B: we know that convection is the process of heat transfer and this happens when a gas or liquid is heated, this heated liquid tends to head the other liquid or gas which is in contact with it. This transferred heat is in the form of thermal energy. This whole process is known as convection. Now, in the question we have asked about the process of heat transmission in liquids. Hence, convection is the correct answer.
Hence, this is the correct option.

Option C: We know that radiation is the emission or transmission of energy in the form of waves, such as radio waves, microwaves, infrared etc. Hence, this is radiation is not the correct answer for the above question.
Hence, this option is not correct.

Option D: This option is also incorrect. As we have discussed above, convection is the correct option for the above question and conduction is incorrect.

Hence, the correct option is B.

Note: We know that heat is transferred in different forms in different materials and states. Now, we know that heat transfer is the process in which a molecule or a particle with higher thermal energy transfers its energy to the adjacent molecule or particle and this process is continued till the thermal energy of the final particle becomes very low to be transferred.