Visitor Visa - B2

I am planning on reapplying for B2 Visa. I had applied with my daughter (age 19) in June 2016 in New Delhi and the visa was rejected. I wanted to attend my cousin’s wedding and had the documents and invitation. The VO didn’t look at anything.

Since the focus is mainly on the DS 160 form, I wanted to get some help on how I can improve my application.

In my previous DS 160 Application I had mentioned the following:
Primary Occupation- Business
Present Employer- Self Employed
Description- I am a business owner and investor in agriculture and commercial real estate
I own retail spaces in a shopping center which is leased to companies such as abcd
I have agricultural fertilization business in which I provide products to local farmers
I receive rental income from residential homes that are rented.

During the interview the following questions were asked:
To me:
Purpose of the trip- To attend cousin’s wedding
What do they do-

And then asked my daughter
Who is she?
Why does she want to go? She answered that she wants to go and see universities for post-graduation as she is in her 3rd/final year. But then also mentioned that will be attending wedding. VO said that we are changing our statement. But it is correct we were going for wedding and to see universities. (Being honest here)
Why isn’t the entire family going? My daughter answered that my mom is staying back with my younger brothers as they are young.
They asked what your mother does.

Then rejected saying next time apply with all family.

I am planning on applying alone this time, my cousin can send sponsorship. I am not sure if that will matter. Please suggest on how I can improve my DS-160 and also how to improve my chances for approval.

Appreciate your time in advance.