Answer:
The tall man wore a big yellow hat on his head.
Explanation:
This is the correct answer because the antecedent is the "tall man". This is a singular noun. Man also tells us it will refer to the pronouns denoting a male gender, in this case "his". Therefore, "The tall man wore a big yellow hat on his head." is correct.
To do so, I guess I'd say use proper grammar and format.
Although your sister isn't someone to write formally to, if you write properly it's good to do in the end
Lol i assume this is what you mean?