In this question, we are given a list of compounds/molecules in List-I and their corresponding shape of the molecule in List-II. We need to match the compounds in List-I with their correct shape in List-II and select the correct answer code.

Let`s analyze each option and match the compounds with their shapes:

Option-1: CH3F - Tetrahedral, HCHO - Tetrahedral, HCN - Trigonal pyramidal, NH3 - Linear

This option does not match the correct shapes of the compounds, so we can eliminate it.

Option-2: CH3F - Tetrahedral, HCHO - Tetrahedral, HCN - Trigonal pyramidal, NH3 - Linear

This option correctly matches the compounds in List-I with their corresponding shapes in List-II. So, we can consider this option as a potentially correct answer.

Option-3: CH3F - Trigonal pyramidal, HCHO - Linear, HCN - Tetrahedral, NH3 - Trigonal planar

This option does not match the correct shapes of the compounds, so we can eliminate it.

Option-4: CH3F - Trigonal pyramidal, HCHO - Linear, HCN -