The question asks for the general time window within which a marriage must be solemnised under the Indian Christian Marriage Act, 1872. Checking each option against the purpose of fixing daylight, public hours helps identify the correct window.
Only the six a.m. to seven p.m. window matches Section 10 of the Act, which was drafted to keep marriages within ordinary daylight hours for transparency.
Therefore, the correct answer is Between six in the morning and seven in the evening.