As I wrote here before, this should be possible, but I wouldn’t get to working on cloze template for some time, and so can’t provide a full implementation for now. If you are open to experimenting yourself, you might want to try making a new cloze note type from the newer version of the template, setting the class for multiple-choice questions, putting {{cloze:YourClozeField}} into the #correctAnswer element and using the value of data-cloze attribute of a span inside corrAnsL instead of innerHTML where the variable corrAns is defined in the code.
The text outlined in your screenshot is not a part of the template, but rather an interface element of an app itself, as such any adjustments to its appearance should be looked for in the settings of the respective app.
However, on Android you can opt to use the template’s own typing instead of the default app one by toggling the Type answer into the card option. For Anki Mobile such mode will also become available and used by default in the upcoming version of the template, which is currently in testing and can be found in this thread.
Have you tried adding the .large class?