"The estimated gross value of the decedent's personal property passing by intestacy is less than"...
A: "Gross value" is the value of the property, not including any loans against it. For example, if there is a vehicle with fair market value of $10,000 and a loan against it for $12,000, the "net" (real) value of the vehicle is -$2,000. But, the gross value is $10,000.
"In addition to the value of the personal property stated in paragraph___ the following right of action existed on behalf of the decedent and survived his/her death, or is granted to the administrator of the decedent by special provision of law, and it is impractical to give a bond sufficient to cover the probable amount to be recovered therein: [Write NONE or state briefly the cause of action and the person against whom it exists, including names and carrier]."
A: This paragraph is asking whether the decedent had any lawsuits pending in which he was the "Plaintiff" (complaining/suing party), rather than the "Defendant." If so, then you can't easily post a bond, because you have no idea how much you are likely to recover on the decedent's behalf, because the court hasn't given a final judgment in the matter.
If there are no lawsuits where the decedent was plaintiff, then this paragraph is inapplicable, and the answer is: NONE.