Nowadays,whether women have a reasonable rights and have an access to study in any field which they are keen on that is a big issue in our society
that是可有可无吧,有的话也没有关系吧。然后right是权利的意思在这里,是可数的。但第一个确实是个问题
追答that不是可有可无,是完全不能有,否则两个主语了。这个句子简单一点就是:whether women have rights to study is a big issue 。这样不挺好,要是加个that多别扭啊。。。(不好意思,具体语法是真的想不起来了。。)