The answer would have to be letter b. Energy
Answer:
The question is incomplete. The mechanism is not included in your question. The attached file contains the mechanism and the proposed mechanism.
Explanation:
See the attached file for the structure.
In a double covalent bonds there are 4 valence electrons that are shared.
The final temperature = 36 °C
<h3>Further explanation</h3>
The balanced combustion reaction for C₆H₆
2C₆H₆(l)+15O₂(g)⇒ 12CO₂(g)+6H₂O(l) +6542 kJ
MW C₆H₆ : 78.11 g/mol
mol C₆H₆ :

Heat released for 2 mol C₆H₆ =6542 kJ, so for 1 mol

Heat transferred to water :
Q=m.c.ΔT

The answer to the question is 300meters.