Answer:
B: Mi padre la ayuda.
Explanation:
Madre is a feminine word, meaning its direct object pronoun would be la. "Lo" would be for masculine nouns, and option c just says "My father helps", not indicating who or what he helps.
El estadio is the right answer
The answer of the question is false
El pan francés es delicioso tostado con mantequilla.
Hope it helps:)