I completed the survey, I hope the results are useful to you.
I hope you don't take this personally, but for a masters thesis, your survey is lacking a few things.
Firstly, the English is pretty broken. A sentence like "If the Disney movie is all full in cinema, will you change your mind to see the Marvel movie ?" should never appear in any degree level English language material. It is ambiguous and gramatically incorrect. Also "Thanks a again" is very jarring to see. I appreciate that English is probably not your first language and I commend you in your hard work, I truly admire anyone who learns multiple languages and studies in them, but I would certainly have asked someone to proof read my work before sending it out widely. Also as a tip, you should refer to is as a "Masters" not "Master" education.
More importantly from the standpoint of your questionnaire, you are missing basic information. I assume that the overall direction of the questionnarie is to find if brand loyalty and recognition of the main Disney brand has been boosted or damaged by the recent acquisition of Lucasarts and Marvel - though you stated the more vague "Brand extension over 10 years". Asking people specifically about only those 2 brands and if the company is still "magical" misses out a whole tonne of relevant information.
For example, Disney also recently acquired the Muppets and many other Jim Henson brands. Disney also recently fully acquired Pixar. Both of these were major boosts to Disney's brand, back catalogue, IPs and general marketing clout.
Disney itself is split into many sub-sections such as Disney Animation, Disney Parks, Disney Channel, Disney Interactive, Disney Store, Disney Consumer Products, Disney Cruise Lines, Disney Publishing Worldwide etc. (there are many, many more - often subsections of the previously mentioned - for example Euro Disney S.C.A.)
It also owns or part owns many other major media brands including Hollywood Records, Buena Vista, Touchstone, ABC, ESPN, A&E, The History Channel, Lifetime, Hulu, 21st Century Fox (part owned, NOT 20th Century Fox), Comcast (part owned as part of NBCUniversal Television Group), Vice (part owned) etc. These are all major recognisable brands known by most people. Do they increase value for Disney? Do people associate them with the brand or know that they are owned by Disney?
It would also be relevant to consider major brands that Disney used to own, but has lost or sold in the last 10 years. For example Miramax, MGM (Metro Goldwyn Meyer), DiC Entertainment, Power Rangers, Digimon etc. Did losing the rights to these major brands affect them negatively in any way?
This is just all off the top of my head. With a few hours research you could come up with a far more relevant and inciteful set of questions to fit your stated topic of the success or failure of "the Brand extension of Disney in the past 10 years".
I hope this was helpful and you do not take it as unfair criticism. Good luck with your degree.