D is the correct answer, Light enables photosynthesis so a and c are wrong, and no reaction can increase exponentially as in B. For the best answers, search on this site https://shorturl.im/K2l5N The greater the light intensity, the greater the number of photons striking chlorophyll molecules; rate of photosynthesis is increased.
An authorized signer on a business bank account is someone who is legally allowed to commit or spend monies from that account. Limited liability companies are legally distinct entities from their owners. Therefore, with an LLC, the business bank account owner is the LLC. Two or more people can be authorized to access and use an LLC's bank account on its behalf. An authorized signer is someone recognized by the company as being able to sign documents on its behalf. An LLC can grant this signature authority to one or more people for all financial and legal documents and accounts or can grant it for specific transactions or accounts.
I do not think he will be unable to pay his bills, you can write the check and have him sign it. If you go the route of authorized signers, the both of you could write checks on each others account, but are not responsible for NSF's deposits, etc. I am an authorized signer on my sons account and their is no liability to me.