def most_frequent_char(text: str) -> str:
    # Escribe tu solución aquí
    cont = 0
    letra = ""
    visitas = []

    for n in range(len(text)):

        if text[n] in visitas:
            continue

        visitas.append(text[n])

        caracter = text.count(text[n])
        if caracter > cont:
            cont = caracter
            letra = text[n]
    return letra