instruction:
In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 
question:
A man shows how to change a tube in a tire. he <sep> (A) puts a jack under the tube to lift it up. (B) puts a new tire on the tube. (C) takes the old tube out, puts the new one in, then pumps it up. (D) moves dirt covering the tube.
answer:
C


question:
[header] How to research the market before launching a product or service [title] Start by doing some qualitative market research. [step] You can do it with an agency or on your own. You only need few people (between 5 and 10) from your target market (potential customers) so it is possible to diy. <sep> (A) [title] Don't expect to work in a large company. [step] Meet people for a coffee, greeting and perhaps the business plan or abstract of a product you just started. (B) It can be very helpful to have people assisting in the research so you don't become too particular. [title] Conduct an analysis of the food, drug or cheese market. (C) The only important thing is not to choose some people that you know. This qualitative research has to be done in an objective and neutral way. (D) [title] Gather information in an essay, packet, card, book or letter. [step] This will help keep the reader engaged.
answer:
C


question:
[header] How to grow herbs outdoors [title] Decide if you want annuals or perennials. [step] Annual plants only bloom for 1 season and include herbs such as anise, dill, coriander, basil, and chervil. Perennial plants come back each season, such as herbs like mint, tarragon, fennel, and chives. <sep> (A) [substeps] You can consider whether you want potting soil, if the soil is loamy, or if the soil is composted. With perennials, perennials will grow well in constant shade and well into full sun. (B) [substeps] Be aware that perennials have very large blooms and require large garden space. Common perennials include philodendron, hydrangeas, ireland yew, and rhododendrons. (C) Perennials are hardy and should be grown after the last frost. [substeps] Be aware that growing herbs in the wrong season can harden them off completely. (D) You can choose to plant annuals, perennials, or both. Just be sure you know which plants will die off at the end of the season.
answer:

D