; and (III) other development activities, as determined by the Secretary. (iii) Density determinations In determining population density under this section, the Secretary shall prescribe a calculation method which— (I) utilizes publicly available data; and (II) includes only those areas in which the applicant is able to meet the service requirements under this section, as determined by the Secretary. (5) Fees In the case of loan guarantees issued or modified under this section, the Secretary shall charge and collect from the lender fees in such amounts as to reduce the costs of subsidies for guaranteed loans, except that the amount of the fees shall be determined so as to not act as a bar to participation in the programs and to not be inconsistent with current practices in the marketplace. (d) Eligibility (1) Eligible entities (A) In general To be eligible to obtain a grant, loan, or loan guarantee under this section, an entity shall— (i) demonstrate the ability to furnish or improve service in order to meet the broadband buildout requirements established under subsection (e)(3) in all or part of an unserved rural area; (ii) submit to the Secretary an application at such time, in such manner, and containing such information as the Secretary may require