Task: Question Answering
Input (English): Question: When formulating tablets with active ingredients that are used at relatively low doses, it is necessary to add excipients whose primary function is to obtain a tablet of a reasonable size. What are these excipients called? 
 Options:  <1> Adsorbents <2> Binders <3> Disintegrators <4> Thinners <5> Lubricants
Output (English): 4